security listening for cctv camera 1 Low-noise processing chips 2 DC+RCA 3 Special explosion-proof metal 4 cheap price

audio monitor/cctv audio pickup/security listening

1.Low-noise processing chips

2.Special explosion-proof metal

3.Power polarity protection circuit

4.DC+RCA 

 

 Indicators

1.50~100m2 Adjustable

2.Impedance of 600 ohms 3.Frequency 200 ~ 10Khz 4.6 ~ 14VDC power supply 5.Size 39*31*18mm

cctv camera security listening