Standard SSM-64A Headset Microphone with VOX and PTT
Model: SSM-64AUPC: 788026144259
For use with HX370S, HX400, HX851. It will also wort with HX37SAS and HX400IS intrinsicaly safe radios however the I.S. rating will be lost as this is NOT I.S. rated.
Specifications| Vox sensitivity | 3mVrms Max 10mVrms Min |
| Input Voltage | 2-10vDC |
| Input Draw | 1.5mA Max |
