Low-noise processing chips Special explosion-proof metal Power polarity protection circuit DCaain+out) +RCA 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 circuitDC(in+out) +RCA50~100m2 AdjustableImpedance of 600 ohms Frequency 200~10Khz 6~14VDC power supply39*31*18mm Size   

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