The VideoSecu MIC03 mini preamp microphone is the best for CCTV professionals. Line level output: 6 - 15 V DC. Power in and power out design allows the microphone to share the same power source with the camera.

1- microphone response chart (specific sheet voltage to dB unit) at different frequencies: 6-12V
2- sensitivity：-30dB
3- frequency range：100-5500Hz