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The gray BP-351 2-Channel Portable Beltpack Headset Station with 4-Pin XLR Connector from Telex features a user programmable microprocessor assisted interface. It allows mono operation. The beltpack includes a channel select button, remote microphone off feature, separate talk button, and a call light in an extruded aluminum case.
The portable metal beltpack is used with RTS 2-wire intercom systems. It is a microprocessor controlled 2-channel select intercom beltpack. The beltpack has connections for headset / earset microphones (dynamic or electret). It also has an auto-sensing function that automatically detects the headset microphone and powers it if the microphone is electret.
Built-in auto-sensing headset connector that will determine automatically whether a dynamic or electret headset is connected to the system
Call function allows the user to send or receive call signals to or from other devices on the intercom channel, including audible call alert on the listen side
Microprocessor controlled microphone kill detect
Powered externally, via the intercom system power supply on channel 1 or 2
Headset 4-pin XLR connection
In the Box
Telex BP-351 2-Channel Portable Beltpack Headset Station with 4-Pin XLR Connector (Gray)
Limited 3-Year Warranty
Table of Contents
Interface Requirements Headset/Earset: 50 to 200 Ω dynamic microphone, 50 to 600 Ω headphones
Mic-Off Frequency Detect: 24 kHz ±800 Hz, 100 mVrms
Noise Contribution to 200 Ω Intercom Line: -75 dBu
Maximum Output: 60 mW into 150 Ω Frequency Response: 200 Hz to 8 kHz +1/-3 dB nominal Audible Alert: 1 kHz tone Total Harmonic Distortion: Less than 0.2% nominal at 50 mW from the line Sidetone: 20 dB minimum range, adjustable