Product Description

CCTV Surveillance Microphone for Security System Small High Sensitivity(CM501E-1) 

Features:

Hidden installation, mini 
high sensitivity, high-fidelity, clear voice, low noise, fashionable appearance, suit for various occasions                                          
Voltage:  9-12VDC, Electric current: 18mA
Output impedance:  600 ohm non equilibrium
Pickup range:  5~50m²
Weight: 1g, Size:25mm*7mm*7mm