lookat CCTV Camera Mic Microphone Mini Spy Audio Sound Voice Pickup Mic Microphone with Bare Wire Line for CCTV Camera Microphone Surveillance Device Camera Microphone

Specifications: Working Voltage: DC 6V-12V Current Consumption: 25mA Frequency Range: 100-5500Hz Features: Built-in DSP noise reduction circuit Imported IC and coupling capacitance Concave and convex surface design reduces reflection 2mm pinhole design Japan imported silver - plated capacitor mi Dynamic closed loop noise reduction circuit Usage: if the microphone is installed near the surface of the sound source, it is necessary to expose the sound picking hole of the microphone on the surface of the object or wall. When the sound is widely collected, it should be installed in the middle of the room, taking into account all sides to balance the sound picking.This type of products need to provide sufficient voltage and current, the general are 12V 100mA DC power supply. Note: it is better to wire separately when wiring, do not use the same cable channel with ac and other strong electricity, and try to stay away from transformer, lamp rectifier and other strong electromagnetic interference equipment.It is better to separate the audio line and the power line to avoid current interference.