Quality CCTV 12V Microphone - In Line RCA Line Level (no pre-amplifier required for connecting to DVR) Overview: Designed for use with any CCTV camera, this easy to fit microphone simply intercepts the power line (12V) and draws its power from there (10mA). A single RCA cable run is required back to your DVR and should be connected to a suitable audio input, no pre-amplifier is required making this microphone easy to fit. It has an omnidirectional microphone meaning it will pick up audio from all directions over around 5 metre radius from where it is located. If you also have a speaker installed in your CCTV setup, this microphone will allow 2 way audio (similar to a telephone conversation). Key Features: Omnidirectional microphone Discrete - actual microphone located in the black box half way down the cable. High sensitivity receiver Excellent frequency response Technical Specification: Maximum Audio output - 2Vp-p Microphone - Electrical Condenser BNC Plug (to camera) + DC Plug (to