Dedicated preamplifier IC High sensitivity and low noise Power polarity protection circuit 50~120m2 Impedance of 600 ohms Mini Lower Noise Sound pickup Audio Monitoring for CCTV camera or PTZ in security surveillance system

Low-noise processing chipsSpecial explosion-proof metalPower polarity protection circuit20~100m2 AdjustableImpedance of 600 ohms Frequency 200~10Khz 9~14VDC power supply 39*31*18mm Size   

Lower Noise Sound pickup Audio Pick up for CCTV security surveillance system