1) Man-machine interaction design, easy-to-operate keypad;
2) Reliable pin connector design;
3) Multiple programmable keys for different requirements;
4) Reliable PU wire designed with bullet-proof material Kevlar.

Microphone specifications:
Sensitivity: -21±3dB @1KHz 0dB=1v/Pa
Output Impedance: ≤2.2kΩ@1kHz
Operating Voltage: 1–10VDC
Distortion: ≤3%(100mV)
S/N: ≥50dB
PTT Life Circle: ≥100,000 times

Dust/Water Protection Class: IP54

Operating Temperature: -30 to 65℃

Applicable to: MD78X