CCTV Microphone Hidden Mini Audio Sound Monitor DVR Security

Collect audio evidence as ant as capturing video evidence, this preamp microphone is a perfect addition to any system. This microphone is compatible with devices that accept AV input, like TV, VCR, DVR。 This high sensitive mini preamp and microphone is the best for professionals, with Preamplifier IC built on board, it increases a microphone's low output voltage to a stronger, more usable level, and it features low noise, high sensitive and auto level adjustment on-board preamp circuit.The Silicon Computers introducing a mini ball microphone that can be added to an existing CCTV camera for audio recording because 90% of the CCTV cameras can record the only video.This Microphone Includes a cable with DC and phono (RCA) connectors, with the DC connector being compatible with a standard 2.1mm DC input for easy installation. Suitable for use outdoors and can also be installed under the weather shield of some cameras for audio recording. Works with all DVR's which have audio input option.