STJグループ（株式会社サンテレコムジャパン、株式会社STJレンテック） List of Products and Services

Surveillance cameras have evolved from standalone units to systems that centrally manage multiple locations over a network. The latest models are equipped with high-precision night vision capabilities and AI motion detection and alert identification, enabling labor-saving operations through extensive real-time monitoring and recording management from the headquarters. Furthermore, by combining a solar power supply system with our unique long-range Wi-Fi, it is possible to implement low-cost solutions with reduced running costs even in locations where securing power and wired LAN is difficult. We propose optimal configurations for various monitoring needs, including agriculture and forestry, production sites, river monitoring, and crime prevention measures. The body cameras we offer are effective for countering harassment. Our systems are designed and operated with a focus on preventing information leaks for serious security operations.

• Security cameras and surveillance systems

Mesh WiFi technology is an innovative Wi-Fi communication area expansion solution for enterprises. By incorporating mesh WiFi, it can enhance the usability of communication infrastructure and add redundancy measures, transitioning to a more comfortable communication environment, not only through traditional LAN (VPN) network lines. The main feature is that, unlike typical WiFi, there is no need to connect each access point (AP) with LAN cables. As long as power is secured, APs can be freely placed in locations where communication needs to be expanded, allowing operations to begin. The multiple deployed access points are constantly monitored by an intelligent controller, which automatically manages suitable routing in real-time. This enables the establishment and realization of stable high-speed packet communication, even in offices with many obstacles, creating a network-like structure.

• Wi-Fi router

I want to contact au, but where should I reach out? Have you ever struggled with not knowing the differences between the various phone support options? At au, the procedures and contact points differ depending on the issue, such as smartphone malfunctions, loss, contract inquiries, billing consultations, new contracts, or device changes. This article will clearly explain the main ways to contact au and how to choose the appropriate support based on your inquiry. *For more detailed information, you can view it through the related links. Please feel free to contact us for further inquiries.

• Mobile phones and smartphones

When a large-scale disaster such as an earthquake occurs, what companies are most concerned about first is likely to be whether "employees are safe," "can customer support continue," and "are mobile phones usable?" Company mobile phones are an indispensable means of communication for daily operations, but they also serve as an important infrastructure that supports business activities during disasters. So, if a major earthquake occurs, will communication be usable without any issues? This article explains the system for confirming the safety of employees that companies should truly prepare for. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.*

• Mobile phones and smartphones

The transceiver app is a service that allows for group calls and simultaneous communication similar to traditional radios by installing a dedicated app on a smartphone. On the other hand, there is "IP radio" as a communication method similar to the transceiver app. Both enable wide-area communication using mobile phone networks or Wi-Fi, but there are differences in their applications and operational methods. In this article, we will explain the mechanism, main features, advantages, and disadvantages of the transceiver app, as well as detail the differences from IP radio and how to choose between them. *For more detailed content, please refer to the related links. Feel free to contact us for more information.*

• Radios, walkie-talkies, and intercoms

The "VXD40BT" is a digital simple radio that focuses on sound quality, honing an auditory sense that cannot be expressed in specifications. It outputs 700mW of power with clear audio from the same speaker unit as the well-regarded "VXD30." Additionally, it features a dual-microphone noise-canceling function that suppresses background noise, enabling clear audio communication. It is effective in various scenarios such as service industries, construction, and communication during disasters. 【Features】 ■ Dual-microphone noise-canceling function ■ Newly developed audio circuit ■ High-volume speaker ■ Equalizer function ■ TX AGC function ■ Mandown function *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The "SRS12" is a specific low-power transceiver featuring a compact design weighing only 50g and equipped with interference avoidance functionality through "YAESU CONNECT Lite." It can be operated in 2 to 4 groups according to the department or task. Additionally, it has a merging function that allows for communication between groups and mass notifications, making it easy to contact all staff. With approximately 17 hours of operational time, it is reliable for long shifts. 【Features】 ■ Ultra-compact design weighing only 50g, unobtrusive when worn on the chest ■ Automatically avoids interference, ensuring clear communication at all times ■ Efficient information sharing by dividing groups according to departments or tasks ■ Dust and waterproof performance rated IP68 ■ Approximately 17 hours of operation on a single charge ■ Open-ear design for comfortable business communication without blocking the ears *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

Corporate smartphones and mobile phones continue to be managed even after they are arranged for employees. There are actually many detailed tasks involved, such as collection, ledger confirmation, initialization, MDM verification, kitting, and delivery. Although each task may seem small, they can accumulate and take up a lot of time in device management. This time, we will closely follow the operations of Santelecom Japan's "Maru Moba" and take a look at the behind-the-scenes processes until the devices are handed over to the next users. *For more detailed information, please refer to the related links. Feel free to contact us for more details.

• Mobile phones and smartphones

Have you ever experienced your iPhone suddenly becoming unresponsive or not turning on? In such situations, a "force restart" can be helpful. This article clearly explains the cases when a force restart is necessary on an iPhone, along with precautions and the operating methods. Additionally, for those who find it difficult to understand the operating methods through text alone, we also introduce a video explaining the force restart available on the Santelecom Japan YouTube channel "STJCHANNEL." If you want to follow along with the actual operation, please use it as a reference. *You can view the detailed content of the article through the related links. For more information, feel free to contact us.

• Mobile phones and smartphones

We would like to introduce a case where Icom's Wi-Fi transceiver "IP110H" was implemented for a manufacturing customer. Previously, they were operating analog simultaneous communication radios, but communication would be interrupted if the distance increased even slightly. By adding access points, they flexibly expanded the communication area, achieving stable communication over a wider range and enabling long-distance communication. 【Case Overview】 ■Industry: Manufacturing ■Adopted Manufacturer: Icom Inc. ■Model Introduced: Wi-Fi Transceiver IP110H, among others ■Number of Units Introduced: IP110H (20 units), IP1100CV (1 unit) *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

We would like to introduce a case where 100 units of the "Digital Simple Radio MiT3000" were implemented for the operation of a sports event. Individual communications were conducted in each designated area, such as the entrance, spectator seats, and the fan zone where merchandise sales took place. Channels were set at the shipping stage, and identification labels were attached. Encryption settings were also applied to prevent interference and information leakage, supporting the operation. 【Case Overview】 ■Industry: Sports Event ■Manufacturer: Motorola Solutions ■Model: Digital Simple Radio/Registered Station MiT3000 ■Number of Units: 100 *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms
• Equipment leasing and rental

In December 2025, the "Smartphone Software Competition Promotion Act (commonly known as the New Smartphone Law)" was enacted. At first glance, this law seems to pertain to "general users" and "app development companies," but it may actually have implications for corporate smartphone operations as well. In this column, we will clearly explain "What is the New Smartphone Law?", "What impact does it have on corporate smartphones?", and "Examples of utilizing MDM (OPTiM Biz)." *For more detailed content of the column (such as blogs), you can view it through the related links. For more information, please download the PDF or feel free to contact us.

• Mobile phones and smartphones

This is a case where a "Digital Simple Relay System" was introduced in the building maintenance industry. Due to various obstacles within the building, there are dead zones scattered throughout, making communication between devices difficult across the entire building. With IP wireless, communication became unstable when the lines were congested. By installing a relay device, we were able to cover communication areas that were previously unreachable with standard simple wireless systems. We established a communication system that is less affected by line congestion during emergencies. [Case Overview] ■Issue 01: Dead zones caused by building structure ■Issue 02: Communication risks during disasters due to carrier line usage ■Issue 03: Security concerns related to equipment installation *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

In environments where radios are used, "interference" can become an issue. This is especially true in construction sites, security operations, event venues, and logistics warehouses, where many staff members use the same radio frequency (channel). In such environments, communication can overlap, making it difficult to hear voices clearly. One of the features used to prevent these problems is carrier sense. This article will introduce the basic mechanism of the carrier sense function, its role as a countermeasure against interference, and the differences between radios with and without the carrier sense function, as well as recommend models for interference countermeasures. If you are considering renting or purchasing a radio, please use this as a reference. *For detailed content of the column (such as blogs), you can view it through the related links. For more information, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The "KBX-P51" is an IP transceiver that can automatically switch between up to three communication lines. Even if the communication status becomes unstable, it will automatically switch to a better line before going out of range. This ensures stable communication. It supports advanced features that were difficult to achieve with conventional wireless systems, such as recording all calls, transcribing conversations, and making calls through a smartphone app, thereby enhancing operational efficiency. 【Features】 ■ Simultaneous translation into multiple languages ■ Call recording and playback functionality ■ Second PTT for instant selection of the transmission group ■ Emergency function to protect users from danger *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

Introducing our "Corporate Smartphone Rental Service." We offer same-day shipping from the time of application, making it possible to respond to sudden site setups or events. The devices are delivered pre-configured, and in case of any issues, we quickly arrange for a replacement device, ensuring a reliable support system. You can extend the rental period freely, from short-term rentals of one month to long-term rentals of a year, according to your project needs. This allows you to minimize initial investment and account for expenses based on actual usage. 【Features】 ■ Fast Delivery: Same-day shipping available ■ Cost Reduction: Expenses can be accounted for based on actual usage ■ Comprehensive Support: Delivered pre-configured ■ Flexible Rental Period: From short-term rentals of one month to long-term rentals of a year ■ Unlimited calls + 5G data ■ Rentals available from just one device *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

This is a case where a customer in the driving agency industry introduced 10 IP radios through our long-term rental original plan "Subsc5." Due to high usage frequency, there has been an increase in failures and communication issues caused by equipment aging, and the time taken for replacement of faulty devices has become a challenge. After the introduction, we established a system where replacement devices can arrive as soon as the next day if the equipment fails. Typically, 10 units are used, and during busy periods, an additional 3 units are rented short-term, which helped reduce operational costs. 【Case Overview】 ■ Model Introduced: Subsc5 Rental Plan - IP Radios ■ Number of Units Introduced: 10 units ■ Challenges: Increased failure frequency and insufficient units during busy periods ■ Effect: Increase in customers due to temporary expansion ■ Effect: Improved operational efficiency through location information management *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

We would like to introduce a case where we implemented 10 units of our digital simple radio "SRD585BT" at Yushima Tenmangu Shrine. Previously, they were using specific low-power transceivers, which had many areas with poor communication, making it difficult for staff to coordinate with each other. Additionally, due to the need to attach the device to their hakama, using a larger radio could have affected their appearance. After the implementation, communication was established throughout the shrine grounds, eliminating disruptions to operations and allowing for better coordination among staff. The adoption of open-ear type earphones also enables staff to easily adjust their earphones when attending to customers. [Case Overview] ■ Model Introduced: Digital Simple Radio SRD585BT ■ Number of Units: 10 ■ Challenge: Many areas with poor communication made coordination difficult ■ Proposal: 2W output "SRD585BT" with group mode *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The "SRS30/SRS30S(BT)" is a compact type of specific low-power transceiver with interference avoidance features from the SRS210 series. It is equipped with a DCM (Dual Channel Monitor) system that avoids interference with a single receiver. It also supports the air clone function, which allows synchronization of settings for the radios being used. With a compact body measuring 47mm in width, 80mm in height, and 22mm in thickness, it has an IP68 dustproof and waterproof rating and can be used without a license or qualification. 【Features】 ■ Two models: standard antenna model and short antenna model ■ Large channel display in amber color for visibility outdoors ■ Transmission and reception indicators use high-brightness LEDs for excellent visibility ■ Cue function to send signals without speaking ■ Approximately 18 hours of battery life with nickel-metal hydride batteries ■ Supports 20 channels + 27 channels for repeaters *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

As the places of work diversify, opportunities to work in various environments such as home, on the go, and at client locations are increasing, not just in the office. On the other hand, there are many situations where a single laptop is insufficient in screen space, leading to limitations in work efficiency. Mobile monitors are gaining attention as a means to solve these issues. However, if you choose incorrectly, it may end up being "an unused piece of equipment." This article explains the key points for selecting a mobile monitor without making mistakes. We will also introduce recommended models, so please read to the end. *For more detailed content of the column, you can view it through the related links. For more information, feel free to contact us.*

• others

Recently, smartphone prices have been steadily rising. More companies are considering purchasing used devices to keep costs down when introducing smartphones for business use. However, there are important considerations when buying used devices. One of these is the "condition of the device" (which indicates the state directly related to the use of the device, such as whether it can connect to networks or if it is locked), which is not apparent to the buyer. If not properly understood, this can lead to serious troubles, including information leaks. Recently, there has been an increase in cases where devices are purchased through individual sales platforms like Mercari, Yahoo Auctions, and flea market apps, but this poses a very high risk for corporate use, so caution is necessary. This article will provide a detailed explanation of the risks and precautions associated with purchasing used devices. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*

• Mobile phones and smartphones

The "DIGNO(R)SX4 KC-S305" is a smartphone designed to reduce daily work burdens and support a more comfortable working style. It adopts a SIM-free model compatible with sXGP (self-owned network), which enables stable voice calls and data communication even in environments where connections to external networks are restricted, such as hospitals and factories. You can use it with confidence in closed environments. Equipped with NFC functionality, it can also be used as a substitute for dedicated reader terminals for cashless payments. Biometric authentication includes facial recognition that works even while wearing a mask, as well as fingerprint recognition. 【Features】 ■ Convenient NFC included (supports reading for payments, employee ID cards, and My Number cards) ■ Direct button for easily launching apps and functions ■ sXGP compatible (communication standard using self-owned TD-LTE method) ■ Wi-Fi handover (automatically switches between multiple access points) ■ Glove touch/wet touch compatible ■ Compatible with alcohol disinfection and foam hand soap cleaning *For more details, please download the PDF or feel free to contact us.

• Mobile phones and smartphones

To conduct stable wireless communication, antennas are essential. Whether using IP transceivers, commercial radios, or specific low-power transceivers, the performance of the antenna and the installation environment greatly influence communication distance and audio quality. However, many people feel overwhelmed by the technical jargon associated with antennas, finding it difficult to understand the mechanisms or differentiate between types. This article will clearly explain the basics of wireless antennas, including their mechanisms, transmission and reception characteristics, key points for choosing the right antenna without making mistakes, and precautions during installation and operation, in a way that is easy for beginners to understand. Please read through to the end as foundational knowledge to correctly understand wireless antennas and build an appropriate communication environment. *For detailed content of the column, you can view it through the related links. For more information, please feel free to contact us.*

• Information and communication equipment and infrastructure

The "SRFD1" is a portable specific low-power transceiver of the FAMICS system that allows simultaneous calls between two parties. There are no restrictions on the number of subunits, allowing anyone in the group to participate in simultaneous calls, and the call content can be received by everyone in the group, enabling efficient collaboration. It boasts an IP68 rating for dust and water resistance, making it safe to use even in rainy weather or dusty construction sites. With a compact size of 60mm wide, 78mm high, and 24mm deep, and a lightweight body of approximately 145g, it does not become a burden during long hours of work. 【Features】 ■ Multi-party simultaneous calls with no limit on participants ■ Automatic backup during line disconnection (automatically switches to alternate calls to maintain communication) ■ Equipped with an automatic connection feature that allows calls to start simply by turning on the power after initial setup ■ Easy pairing (group settings) ■ Emergency notifications via CUE function ■ Long battery life due to energy-saving design *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The "SRS90/SRS95" is a specific low-power transceiver compatible with repeaters, manufactured by Yaesu Musen Co., Ltd. It is equipped with a multi-channel monitor to avoid interference, allowing for comfortable communication without noticing interference by simultaneously monitoring channels with two receiving units. With excellent dust and water resistance rated at IP68, it also features a robust body compliant with MIL-STD-810H standards against vibration and shock. With a maximum output of 700mW, it provides high sound quality and loud volume, making it easy to hear the other person's voice even in noisy outdoor environments, ensuring reliable communication. 【Features】 ■ The SRS90 features simple operation with a key model that eliminates the channel change button. ■ Teleport function that automatically moves to channels less prone to interference. ■ Area research function to monitor channel usage before use. ■ One-click hands-free function that maintains the transmission state in response to voice with a single press of the access key. ■ Newly developed earphone jack with auto-lock function. *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The demand for using transceivers hands-free is rapidly increasing in many fields such as construction, security, food service, and event management. This article will comprehensively explain the theme of "hands-free transceivers," covering mechanisms such as VOX function, Bluetooth, simultaneous calls, compatibility by type of radio, advantages and precautions, and suitable selection methods. If you want to communicate without stopping work, please refer to this guide for choosing hands-free compatible transceivers. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

We would like to introduce a case where we proposed digital simple radios (registered stations) to the Yokohama Excellence, a professional basketball team. The staff operating the team includes many women, and it is not uncommon for them to run around the venue for several hours on game days. To minimize physical strain during such times, we suggested a compact and lightweight model of the radio. By placing it in a nylon case with a shoulder strap, it can be carried separately from other belongings. [Case Overview] ■ Industry: Professional Basketball Team ■ Manufacturer: JVC Kenwood Corporation ■ Model Introduced: Digital Simple Radio (Registered Station) ■ Number of Units Introduced: 50 units *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

We would like to introduce a case where we proposed the digital simple business radio "SRD795" for guiding operations at a festival. The customer in this case faced challenges with traditional digital simple radios (registered stations) as they experienced interference with nearby users and security personnel, making communication difficult. After the introduction, they were able to utilize the automatic interference avoidance feature, which allowed for smooth communication without any issues. 【Case Overview】 ■Challenges - Unable to communicate due to interference - Unable to communicate even with IP radios ■Results - Successful communication achieved with the automatic interference avoidance feature *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The "SRNX100" is a vehicle-mounted IP radio/IP transceiver that makes it easy to obtain location information thanks to its GPS functionality. In addition to the call range of mobile phones using NTT Docomo or KDDI au's LTE network (dual SIM compatible), it also supports Wi-Fi. You can operate hands-free while talking by simply pressing the transmit key once before speaking. 【Features】 ■ Wide communication range using mobile phone networks ■ Individual communication ■ Group communication ■ Simultaneous calling ■ Call history display for missed calls during individual calls *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The other day, I had the opportunity to actually touch explosion-proof smartphones at an exhibition. What kind of image do you have when you hear "explosion-proof smartphone"? To be honest, I had the impression that it would be a "smartphone designed to prevent explosions," which I thought would likely be large, focused on protection, and lacking in usability and design. However, after seeing, touching, and comparing explosion-proof smartphone cases from multiple manufacturers, my impression changed significantly. In particular, I felt clear differences in design philosophy and usability between overseas and Japanese products, even though they were all explosion-proof smartphone cases. This time, instead of a specialized explanation about explosion-proof technology, I would like to share my honest impressions based on my experience at the exhibition. *For more detailed content of the column, you can view it through the related link. For more information, please feel free to download the PDF or contact us.*

• Mobile phones and smartphones

In recent years, with the evolution of communication infrastructure, "Wi-Fi (wireless LAN) compatible IP transceivers" have been gaining attention in addition to traditional radios. What exactly is a "Wi-Fi (wireless LAN) compatible IP transceiver"? How does it differ from conventional transceivers? This article will explain in detail the features, selection criteria, and usage scenarios of Wi-Fi transceivers. We will also introduce recommended models that are active in various settings, from event venues to construction sites and nursing facilities. If you are a company representative considering the introduction of Wi-Fi transceivers for business use, please use this as a reference. *For detailed content of the column, you can view it through the related links. For more information, please feel free to download the PDF or contact us.

• Radios, walkie-talkies, and intercoms

We would like to introduce a case study on the rental of radios, transceivers, and intercoms related to basketball. At Earth Friends Tokyo Z, they utilize STJ Rentec's radios during home games. The operational staff uses these radios, allowing for close communication. By coordinating with other staff members for event progression and trouble response, they achieve smooth operations. 【Case Overview】 ■ Smooth communication at sports event venues ■ Recommended for event progression as communication partners can be shared ■ Effective in large venues, facilitating collaboration among staff *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

We are pleased to announce the opening of the "Walkie-Talkie & Smartphone Rental Shop," which can be used in various scenes such as events, construction sites, and disaster prevention training. The shop will open in Sapporo, Tokyo, and Osaka, with a reception counter also established in Hakata. A grand opening campaign is scheduled to run until March 31, 2026. Enjoy events, festivals, and sports competitions more comfortably. The more units you rent, the more savings you get. Please act quickly. 【Three Points That STJ Rentec Can Offer】 ■ Having a physical store allows for same-day support and shipping, providing peace of mind in emergencies. ■ You can see, try, and consult about walkie-talkies directly at the store. ■ With 50 years of experience solely in radio equipment, you can consult us about anything related to radios. *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms
• Mobile phones and smartphones

We will simultaneously open our transceiver and smartphone rental shops in three locations: Tokyo, Sapporo, and Osaka. At the Santelecom Japan rental shop, you can consult on actual devices, implementation advice, and operational design right on the spot. To commemorate the opening of the shop, we have prepared exclusive benefits for visitors. The implementation period is scheduled from January 26, 2026, to March 31, 2026. The details and conditions will be provided by our staff. 【Facilities/Products Offered】 ■ Corporate implementation consultation counter ■ Mobile rental devices ■ Transceiver rental devices *For more details, please download the PDF or feel free to contact us.

• Mobile phones and smartphones
• Radios, walkie-talkies, and intercoms

"MaruMoba Lite" is a service that allows you to delegate all the tedious tasks from purchasing devices to setup and repair support. It covers issues like screen cracks and water damage thoroughly without any additional contracts. The monthly fee is simple, and there is no need to pay extra for insurance. It reduces the burden on the person in charge while providing peace of mind in case of emergencies. This plan is perfect for those who feel they want to make their internal mobile operations "easier" and reduce management hassle. [Services] ■ iPhone repair procedure agency service ■ Simple kitting service (paid) *For more details, please download the PDF or feel free to contact us.

• Mobile phones and smartphones

We would like to introduce a case study of the implementation of the portable digital simple radio "SR810UA" for our customers in the security industry. The security base shares its facilities with other companies, and there are numerous radios operating within the area, indicating room for improvement in the management system of the radios. Additionally, while multiple teams required radios, there was a desire to reduce the number of units as much as possible. After implementation, we were able to consolidate communications into one unit, allowing us to equip each team with radios while reducing the total number of units. Furthermore, the management of radios within the security base became simpler than before implementation, leading to operational improvements. 【Case Summary】 ■Challenges - Each team was using two radios for internal communication and two for overall communication. - There was a need to reduce costs associated with radios. ■Implementation Results - Operations became possible with just one radio. - Cost reductions were achieved through a decrease in the number of radios. *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

Are you troubled by dead zones in wireless communication or insufficient communication range? A "wireless repeater" is an important tool for improving the communication range of transceivers and radios. Clear communication can be achieved even in areas where radio waves are difficult to reach, large sites, or facilities with different levels, through the use of a repeater. In this article, we will thoroughly explain the basic mechanism of wireless repeaters, the benefits and precautions of their introduction, and how to choose one. We will also introduce our top three recommended wireless repeaters for licensed stations, so please be sure to read to the end. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The SRD580 is a digital simple business radio that reliably supports business communications with advanced technology from YAESU Connect Light and shuts out interference with its interference avoidance feature. When it receives interference from non-members, it instantly switches to a backup channel to avoid interference, ensuring that communication among members is not affected. Additionally, it features high durability, 1400mW high sound quality and volume, high-performance noise cancellation, and long battery life, making it suitable for professional use. With 2W of high power, it achieves a wide coverage area, allowing for communication even in places where specific low-power radios have difficulty reaching. 【Features】 ■ Two convenient functions made possible by YAESU Connect Light ■ A rich variety of four color options ■ Simple key model ■ One-click hands-free function ■ Area research function *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

We would like to introduce the "Corporate Smartphone iPhone 17" that we handle. Thanks to its eSIM-only design, you can set up and switch communication plans without changing SIM cards. Managing multiple plans and using it overseas is now smoother than ever. Additionally, the AI processing capabilities have been enhanced, supporting advanced features such as text summarization and image recognition. 【Features】 ■ Smooth operation with up to 120Hz ProMotion technology ■ Supports a maximum brightness of 3,000 nits, ensuring visibility even outdoors ■ Equipped with a 6.3-inch Super Retina XDR display ■ Features a Ceramic Shield on the front for improved resistance to scratches and impacts ■ IP68 rated for water and dust resistance, suitable for various everyday scenarios *For more details, please download the PDF or feel free to contact us.

• Mobile phones and smartphones

Have you ever used a pocket Wi-Fi that utilizes the currently popular cloud Wi-Fi? At Santelecom Japan, we offer "STJ Rental Wi-Fi" for corporate customers. Although I usually guide customers, I wanted to verify whether "cloud Wi-Fi really connects comfortably" and "whether the switching is smooth even while moving," so I decided to use STJ Rental Wi-Fi myself for a few days. In this report, I will honestly share my experience, including both the good aspects and the points that raised some concerns. *For detailed content of the column, you can view it through the related links. For more information, please feel free to download the PDF or contact us.

• Mobile phones and smartphones

While digital transformation (DX) is progressing in factories and construction sites, the use of smartphones and tablets is strictly limited in "explosion-proof areas" such as oil and gas plants and chemical factories. This is due to the risk that sparks and heat can lead to serious accidents. Traditionally, expensive explosion-proof smartphones were the norm, but in recent years, a new option has emerged: "attaching explosion-proof cases to existing iPhones." This column will provide a detailed explanation of the basics of explosion-proof technology, an overview of the standards, and the benefits of implementation. *For more details on the column, you can view it through the related links. For further information, please download the PDF or feel free to contact us.*

• Mobile phones and smartphones

We offer the "iPad for Businesses (A16)." With the high-performance A16 chip and a long-lasting battery, you can work quickly and confidently. Switching between multiple apps and collaborating online is smooth. We support your daily work and learning more comfortably. A dedicated representative will carefully assist you with inquiries related to corporate pricing, purchasing methods, initial costs, pricing plans, MDM settings, and more regarding implementation. Please feel free to contact us. 【Features】 ■ Draw with a stylus, write with a keyboard ■ Your favorite place becomes your creative studio ■ Bring your imagination to life with this one device *For more details, please download the PDF or feel free to contact us.

• Tablet PC

Have you ever felt that when using a radio (transceiver or intercom), sometimes "another voice mixes in" or "you can't hear the other person's voice"? The cause may be "interference." In this article, we will introduce the main causes of interference, specific countermeasures, and recommend digital simple radios for interference prevention. Please refer to this when using radios. *For detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

We would like to introduce a case where the rental service for the IP radio "SRNX1" was implemented in event and exhibition management. This customer originally used digital simple radios, but interference with other radios was likely to occur at the event venue. After implementation, the restrictions on transmission during event management and progress were lifted, leading to smoother information sharing. 【Case Overview】 ■Challenges - Radios are prone to interference at the event venue - There are areas within the venue where communication is not possible with digital radios ■Results - Improved communication situation, with zero interference - Communication possible anywhere within LTE coverage area *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms

The "SRD790/SRD795(-BT)" is a professional-grade wireless device featuring high durability, 1400mW high sound quality and volume, high-performance noise cancellation, and long battery life. The newly implemented feature "YAESU Connect" offers powerful interference avoidance and convenient functions utilizing dual-band simultaneous reception. Individual calls can be made in up to 7 groups, and in emergencies, barriers between groups can be removed for information sharing (Merge function). 【Features】 ■ Simple key model SRD790 ■ One-click hands-free function ■ CUE: Cue function ■ Unique noise canceling ■ Area research function ■ Air clone function *For more details, please download the PDF or feel free to contact us.

• Radios, walkie-talkies, and intercoms