Product S/N:120308236
Spec:sound pickup
Product Memo:public place
Product Class:99.CCTV Accessories
¡́Dedicated preamplifier IC
¡́High sensitivity and low noise
¡́Power polarity protection circuit
50~120m2 Impedance of 600 ohms
Frequency 50 ~ 13Khz
6 ~ 14VDC power supply
Size 39*31*18mm