CCTV Surveillance Microphone for Security System Small High Sensitivity(CM112)

Features:

Using multistage dynamic noise reduction process,
Built-in imported chips, high sensitivity,
Using Dolby noise reduction technology.
Automatic gain control (AGC) circuit.
For installation in police stations, courts, meeting rooms, interrogation rooms, banks, etc.
Pickup range:  10~100m²
Working voltage:  12 V DC regulated power, Electric current: 20mA
Sensitivity:  -35db
Signal Noise Ratio:  70db
Frequency response:  20Hz to 20KHz
Transmission cable:  0.5 mmRVVP 3 core shielded cable, ordinary 4 core telephone lines, five types of network twisted-pair cable
Weight: 42g, Size:85mm*85mm*33mm