Electret Microphone Type MIKE M20 for Midland M-20.
Also compatible with Midland Alan48Plus Multi, Alan78Plus Multi, 48Excel, Midland 248, Midland 248XL, Midland 278 and Alan 121 (For these models the PRIORITY button becomes LOCK).
Connector 6-Pin.

FEATURES, FUNCTIONS AND SPECIFICATIONS:
• Electret Microphone
• Connector 6-Pin
• 3 Buttons; Up/Down/Priority

WIRING OF MIC CABLE:

1.  Audio
2.  RX
3.  TX
4.  UP
5.  Down/Ground
6.  Lock