Waterproof CCTV DVR NVR Audio Microphone Cable. The SM-2/DC-PLUG is designed to listen to sound from the surroundings and operate with NVR / CVR / DVRs. CCTV Solution! Output impedance : 600 Ω. A marking of a crossed out waste bin indicates that the product may not be disposed together with other household waste in theentire EU.
eBay