3M™ Peltor™ PowerCom Plus™ MT53H74620, PowerCom Plus: 462-467 Mhz, Headband, NRR 24 dB * 22 Pre-Programmed channels 462-467MHz * Has a built-in active-volume function that lets you hear ambient sound: conversation, machine sounds and warning signals * Weak sounds can even be amplified, so you hear them better than you would without hearing protectors * Sudden impulse noises at harmful levels...
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are immediately attenuated * An electronic voice tells you what settings you are adjusting, so you do not have to take off the headset to check * Unused, the set automatically switches off after two hours to save the batteries * For safety reasons, the external system has signal priority * You can also connect a CD player or FM radio and listen to news and music 38 CTCSS privacy sub-channels English/Spanish/French ghost voice selection VOX and PTT radio transmit Noise-cancelling microphone 22 available channels on PowerCom BRS Channel re-programmability Distance/coverage up to 2 miles* Voice activated transmit Rechargeable battery pack compatible Uses 2 AA betteries Certified intrinsically safe (4620 units only)
