Mini Microphone High Sensitive Pickup O Mic for CCTV Security Camera DVR Sound

Features： This security microphone for CCTV security camera is compatible with devices that accept AV input, like DVR, VCR, TV, etc. Used to increase a microphone's low output voltage to a stronger usable level. High Sensitivity o Sound Pick Up. Sensitivity adjustable. Low noise, high-fidelity. Wide monitoring range of about 10-50 square meter. Specifications： Color： Black Material： Plastic Voltage： DC 9-12V Current： 15mA Output Impedance： 600ohm Monitoring Range： 10-50 Square Meter Connector： Red (DC12V Input), Black (DC12V Output), White (RCA) Cable Length： About 42cm Package Weight： About 29g Package List： 1 * o Pickup Device (Other items in the pictures are not included.).