Fe tures:
1.This security microphone for TV security c mer is comp tible with devices th t ept V input, like DVR, VCR, TV, etc.
2.Used to incre se microphone's low output volt ge to stronger us ble mplitude.
3.High Sensitivity udio Sound Pick Up.
4.Sensitivity djust ble.
5.Low noise, high-fidelity.
6.Wide monito r nge of bout 10-50 squ re meter.

Specific tions:
Color: Bl ck
M teri l: Pl stic
Volt ge: DC 9-12V
Current: 15m
Output Imped nce: 600ohm
Monito R nge: 10-50 Squ re Meter
Connector: Red (DC12V Input), Bl ck (DC12V Output), White
C ble Length: 42cm
P ck ge Weight: 29g

P ck ge List:
1 * udio Pickup Device (Other items in the pictures re not included.)