Product S/N:120308220
Spec:sound pickup
Product Memo:Metal vandal proof Pinhole hidden
Product Class:99.CCTV Accessories
¡ì Built-in AGC gain audio circuit
¡ì imported ICs, coupling capacitance
¡ì 2mm pinhole design
¡ì Japan's imports of gold-plated capacitor microphone
¡ì Dynamic closed-loop noise reduction circuit
10 to 80 m2
Impedance 600 ohms
Frequency 20 ~ 20Khz
Power 9 ~ 12VDC
Size ¦µ15 * 50mm
For HaiKang, Dahua DVR device