Compatible with helmets and work caps, implementing four-party simultaneous calls.
We propose a solution! It will lead to improved operational efficiency! The DJ-PHM20 is a specific low-power transceiver that supports simultaneous calls for 2, 3, or 4 parties. It can also be used in conjunction with the Triplex+ series handheld device (DJ-P400) and the vehicle/base type (DR-PM300SE) that support 4-party simultaneous calls. - It implements all 47 channels of low-power wireless communication, supporting simultaneous calls for 2, 3, or 4 parties through alternating, relay, and linked relay modes. - Specifically designed for attachment to helmets and work caps, it eliminates potential hazards by securing the earphone microphone cable. - The attachment to helmets uses a rubber belt and can also be mounted on work caps. - The main unit meets the IP66 standard for dust and water jet resistance. - It features a large external battery that allows for 50 hours of talk time in alternating communication and 8 hours in multiple simultaneous communication. - It supports both standalone relay for alternating communication and linked relay, significantly extending communication range. - Equipped with a smartphone app for settings, it includes ACSH for automatic configuration of the current channel and group talk, as well as Air Clone for setting all configuration items, making initial setup easy.
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basic information
Accessories: Battery pack, 2 helmet holders, 3 headbands, 2 cable clips, AC adapter Dimensions: - Wireless unit: Width 82 × Height 95 × Depth 46 mm (excluding protrusions) - Battery unit: Width 50 × Height 86 × Depth 22 mm (excluding protrusions) Weight: Approximately 186g (excluding some accessories) Dust and water resistance rating: IP66 Estimated operating time: - Intermittent relay call: Approximately 50 hours - Linked relay: Approximately 36 hours - Two-party simultaneous call: Approximately 11 hours - Three/four-party simultaneous call: Approximately 8 hours *Actual times may vary significantly depending on volume and environment. Estimated communication distance (for intermittent call at 10mW/simultaneous call for 2-4 parties continuous transmission at 1mW): - Flat land without obstacles, like a riverbed: Intermittent call 200m/simultaneous call about 100m - Areas with many obstacles, like urban areas: Intermittent call 50-100m/simultaneous call about 50m - Inside buildings: Varies greatly depending on structure. Vertical levels can be a significant obstacle. *With standalone relay, the area for intermittent calls can be expanded approximately four times in surface area, and with linked relay, it can be expanded up to eight times in a linear direction. *Two to four-party simultaneous calls do not change significantly even at 10mW.
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Applications/Examples of results
Purpose: Communication and instructions when using work vehicles such as heavy machinery and various cranes. Examples of achievements: Construction, demolition work, infrastructure projects, quarries, etc.
Detailed information
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【Accessories】 - Battery pack - 2 helmet holders - 3 headbands - 2 cable clips - AC adapter
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【Regarding Attachment to the Helmet】 - We use a popular type of headband holder that fits into the edge of the helmet (see image). It may not be possible to attach it to helmets that do not accommodate this shape. - In addition to installation issues, strong winds can cause wind noise. - Please be cautious of falls in environments where the top of the head is likely to get caught on protruding objects. - In three-way or four-way calls, the ability to communicate may be affected by the relative positions of the users, resulting in difficulties in hearing or low volume.
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Company information
Wedge Corporation is a company that sells and rents wireless devices, transceivers, and intercoms. We aim to be a company that customers can say, "I'm glad Wedge was there, anytime, anywhere." We sincerely respond to diverse needs and wants in various situations, striving to be a good partner for our customers. 【Wedge's Strengths】 ■ Support anywhere in Japan ■ Top-class product and inventory numbers in the industry ■ A wide range of original Wedge products ■ Compatibility with various web ordering systems ■ Solution proposals through field sales ■ Support after installation (repair maintenance, license management) Our company obtained ISMS certification at our Kyoto and Tokyo headquarters in 2021, and in 2022, we received Privacy Mark certification at all locations. We will continue to strive to be a company that earns the trust and confidence of our customers.
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