Listen-in microphone. Adjustable to suit the enviroment; localise, direct audio or ambient.

Specification:

Input Voltage:           DC 9 - 16 Volt
Band Width:              100 - 10.000 Hz
Output:                     600 Ohm
Consumption:            6 mA
Frequency:               2.5 dB
Output Voltage:        0 - 6 Volt