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  3. パル技研
  4. What is a microwave?
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  • Jul 02, 2020
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Jul 02, 2020

What is a microwave?

パル技研 パル技研
Microwaves are a type of radio wave and a form of electromagnetic wave. Electromagnetic waves propagate as repeating waves, and the number of repetitions per second is called frequency (measured in hertz, Hz). The length from the peak of one wave to the peak of the next is called wavelength. Electromagnetic waves are named according to their frequency, and their applications vary according to their characteristics. In our company, we refer to radio waves with frequencies ranging from 3 GHz to 30 GHz (wavelengths from 10 cm to 1 cm) as "microwaves," and we use 24 GHz band radio waves in our microwave sensors. ◆◆ Features of Microwaves ◆◆ The features of microwaves include: - High directivity - Resistance to weather changes such as rain, fog, and snowfall - Ability to penetrate materials like resin, making them unaffected by obstacles These features, combined with our unique algorithms (signal processing technology), enable long-distance detection even in harsh environments. Additionally, our sensors can be used without a license. They can be installed in various situations, both indoors and outdoors, within the country.
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Microwave Intrusion Detection Sensor 'BSS01/BSM02'

Easy to adjust and add sensors! A microwave intrusion detection sensor that is strong against natural environments and capable of distance measurement.

The "BSS01/BSM02" is a microwave intrusion detection sensor that is highly resilient to natural environments and capable of distance measurement. Unlike conventional Doppler and infrared interruption methods, it adopts the FMCW method to detect intrusions based on distance and reflection levels, which reduces false alarms compared to traditional methods. It complies with the technical standards certification (ARIB STD-T73) for 24GHz band specific low-power radio stations, eliminating the need for cumbersome radio station license applications during use. Additionally, it can be used both indoors and outdoors in the country. 【Features】 ■ Strong against natural environments ■ Capable of long-distance monitoring ■ Covers a wide detection area ■ Capable of detecting intrusion locations ■ Easy installation adjustments and sensor expansions ■ Reduces false alarms *For more details, please refer to the PDF materials or feel free to contact us.

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Microwave Proximity Sensor 'BSS300/BSS301'

Separating the surrounding environment and detection area with distance information to reduce false alarms! A short-range intrusion detection sensor that can measure distance.

The "BSS300/BSS301" is a sensor that detects intruders using radio waves in the 24GHz band. In pole monitoring, it is possible to supplement the blind spots created at the feet of various intrusion detection sensors from above towards the ground. Microwaves are less affected by rain, snow, fog, backlighting, and other conditions, allowing for more stable monitoring even in environments where infrared sensors, image sensors, electric field sensors, and laser sensors tend to generate false alarms. 【Features】 ■ Strong against weather conditions such as rain, wind, snow, and fog, ensuring high reliability ■ Not affected by temperature changes caused by swaying vegetation ■ Can be installed along walls, on top of fences, and in various locations ■ Not influenced by surrounding reflections *For more details, please refer to the PDF document or feel free to contact us.

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Microwave Smart Sensor "BSS20"

Counter-terrorism measures for important infrastructure such as power plants and airports! 3D radio wave barriers reliably catch terrorists.

The "BSS20" is an intrusion monitoring sensor that uses 24GHz band radio waves. It detects intruders by blocking a detection area composed of multiple opposing transmitters and receivers. It is robust against outdoor natural environments, easy to adjust during installation, and can be utilized as a counter-terrorism measure for critical infrastructure such as power plants and airports. 【Features】 ■ Strong against weather conditions such as rain, wind, snow, and fog, ensuring high reliability ■ No need for precise optical axis alignment like infrared sensors ■ Can be installed along walls, on top of fences, and in various locations ■ Forms a 3D radio wave barrier through multi-stage installation of up to 4 layers *For more details, please refer to the PDF materials or feel free to contact us.

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Microwave Multi-Span Sensor 'BSS200-P1'

Security measures for factories and equipment! Catering to various needs from easy installation to permanent setups.

The "BSS200-P1" is a sensor that detects intruders using 24GHz band radio waves. When an intruder obstructs the detection area, which is composed of a pair of transmitters and receivers, an alarm is triggered. There is no need for precise optical axis alignment like with infrared sensors, making installation adjustments easy during setup. It caters to various needs, from security measures in factories and facilities to simple installations and permanent setups. 【Features】 - Strong against weather conditions such as rain, wind, snow, and fog, ensuring high reliability - No need for precise optical axis alignment like with infrared sensors - Can be installed in various locations, such as along walls or on top of fences - Achieves easy installation through miniaturization of the sensor and simplification of the interface *For more details, please refer to the PDF materials or feel free to contact us.

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Microwave Safety Monitoring Sensor 'BFS01/BFS01-P'

Simultaneously measures speed and distance! A safety monitoring sensor that utilizes highly weather-resistant microwaves.

The "BFS01/BFS01-P" is a microwave safety monitoring sensor that utilizes radio waves, making it resilient to weather conditions such as rain, wind, snow, and fog. It can perform reliable measurements with minimal false detection even in harsh outdoor environments. It complies with the technical standards for 24GHz band specific low power radio stations (ARIB STD-T73), and there is no need for a cumbersome radio station license application when using it. Additionally, it can be used both indoors and outdoors within the country. 【Features】 ■ Capable of measuring speed and distance simultaneously ■ Dustproof and waterproof with an IP67 rating, allowing for direct outdoor installation ■ Compatible with system requirements through contact output and Ethernet  (* Speed and distance information is supported only via Ethernet) * For more details, please refer to the PDF materials or feel free to contact us.

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Related catalog(5)

Microwave Proximity Sensor BSS300/BSS301

Microwave Proximity Sensor BSS300/BSS301

PRODUCT
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Microwave intrusion detection sensor 'BSS01/BSM02'

Microwave intrusion detection sensor 'BSS01/BSM02'

PRODUCT
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Microwave Safety Monitoring Sensor 'BFS01/BFS01-P'

Microwave Safety Monitoring Sensor 'BFS01/BFS01-P'

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Microwave Smart Sensor "BSS20"

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Microwave Multi-Span Sensor 'BSS200-P1'

Microwave Multi-Span Sensor 'BSS200-P1'

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We have added updates to the homepage: Project (List) / (Housing-related Projects) has been published!

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The "DUO System Formwork (Lightweight Resin Formwork)" is the latest lightweight resin system formwork designed with the concept of being usable for walls, columns, and slabs. Since it is made from new materials, it is lightweight, has fewer components, and is easy to handle. We have recently added a page showcasing the achievements of using this lightweight resin system formwork on our company website. 1. (Domestic Achievement) (Tentative Name) Hatanodai 6-chome Project 2. (Domestic Achievement) (Tentative Name) Komazawa 5-chome Project 3. (Domestic Achievement) (Tentative Name) New Construction of Tadeike Mansion in Mitake Town Please take a look from the "Related Links." *Products available in Japan can be viewed at the Ibaraki Stockyard, so please feel free to contact us. Perry Japan Co., Ltd.

Jan 12, 2026

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Majesta Fragrance can be used for scent branding.

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The impression of stores and offices is greatly influenced not only by visuals but also by "scent." Scent tends to linger in people's memories and is an important element that unconsciously shapes the image of a space. Therefore, in recent years, "scent branding" utilizing fragrance has gained attention. Majesta Fragrance uses commercial aroma diffusers to spread a natural scent evenly throughout the entire space. Memorable scents create an impression of cleanliness, luxury, and reassurance, contributing to the enhancement of the image of stores and companies. By creating a scent experience, a sense of "uniqueness of the place" is born, which is effective for differentiation from other stores and for encouraging repeat visits. Majesta Fragrance offers an easy-to-implement rental service with a monthly subscription model. A free trial installation is also available, so if you are a store or company interested in scent experiences, please feel free to contact us.

Jan 10, 2026

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[Free Listing] CIC Craftsman Job 3-Month Free Job Posting Benefit

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  • EVENT

This spring, we will be launching a new job site specifically for craftsmen and construction sites in the construction industry, called "CIC Craftsman Job." In advance of this release, we have prepared two special benefits exclusively for companies that pre-register. Benefit 1) You can advertise for free for three months from the release of the job site. Benefit 2) We will regularly send you information about job seekers (construction management engineers) via email. *You can unsubscribe if you do not wish to receive this. Companies facing challenges with labor shortages are encouraged to register during this opportunity.

Jan 09, 2026

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Cross folding screen surface

[Production Example] F Company in the Kyushu Area Cross Folding Screen | Fully Customizable | For Hotels, Inns, and Banquet Halls

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  • PRODUCT

Here is a case study of the production of a cross folding screen for Mr. F in the Kyushu area. This screen maintains the beauty of traditional folding screens while offering a custom feel with the freedom to choose surface materials. You can select from a wide variety of vinyl fabrics for both the front and back surfaces. It can be freely styled to suit the interior of the space and its purpose, ranging from Japanese modern to contemporary settings. Equipped with a "true tailoring" structure, it features durable stainless steel fittings and undercut baseboards. Weighing approximately 24 kg, it is solidly constructed to elegantly divide spaces. It supports the creation of ideal environments, regardless of whether they are Japanese or Western styles. ■━━━━━━━━□ ┃ Case Overview ┃ □━━━━━━━━■ ■ Year of Production: 2025 ■ Delivery Location: Kyushu Area ■ Materials: Vinyl fabric Colored mulberry edge True tailoring specification Undercut baseboard Stainless steel cover fittings

Jan 09, 2026

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Earthquake measures for elderly welfare facilities

[Case Study] Introduction of earthquake measures for factories and waste treatment facilities. Emergency shutdown of factory equipment during an earthquake!

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The seismic sensor device "HK-2" detects strong tremors equivalent to a seismic intensity of 5 or higher, transmits a signal to the control room, and emergency stops the facility equipment. 【Installation Location】 Automotive parts factory 【Challenges】 Due to the maintenance and replacement of the factory equipment control devices, we considered updating the existing seismic sensors as well, but since production had already ended, we were looking for alternatives. 【Effects After Installation】 The HK-2 has the function to emergency stop equipment during an earthquake, and since its functionality is the same as the existing device, it was introduced as a replacement. Its compact size also allowed it to fit within the existing control panel being used. ★See more examples of the seismic sensor device "HK-2" https://www.hotron.co.jp/recommend/HK-2_lp.html#anchor_a04 ◎For more details, please download the materials or contact us.

Jan 09, 2026

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  • 「本当に必要」なVR体験を。 蓄積したノウハウを様々名業種へ オーダーメイド型VR導入支援
  • 高セキュリティ 機密会議 完全オフライン運用 高セキュリティ議事録AI オンプレミス仕様で安心運用 SecureMemo
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