Key Features of SIZHENG QD30 cctv audio microphone
1.Specially designed for prison interrogation system of synchronous recording, pinhole type design, hidden installation.
2.The Advanced resin material "honeycomb" collect sound design, completely eliminate "hiss" electronic noise.
3: BOURNS large gilded vibration membrane microphone,5~50 square meters in high fidelity, high sensitivity, high bandwidth and low noise.
4.Using 0.8mm pinhole type design, its internal resonance spoke after precise calculation, the sound is more clearly.
5.Built-in AGC noise reduction signal processing circuit, effectively reduce serious echo of empty room.
6.Long audio signal transmission technology,use the RVVP3 x 0.5mm2 shield cable, it is distortionless within 3km.
7.Integrated professional front audio amplifier circuit, direct drive active speakers, DVR, earphones, etc.
8.Widely used in the interrogation room, courts, public security organs, procuratorate, banks and other any indoor places need to monitor, give full play to the effect of high-fidelity sound pickup.
Specifications of SIZHENG QD30 cctv audio microphone
|Audio Monitor Range||5-50 square meters (adjustable)|
|Audio Transmission Distance||3000m|
|SNR||70dB(1m40dB)50dB(10m40dB)1KHz at 1Pa|
|Dynamic Range||104dB (1KHz at Max dB SPL)|
|Max Sound Pressure||120dB SPL (1KHz,THD 1%)|
|Output Impedance||600 ~ 1000Ω non-equilibrium|
|Microphone||BOURNS large gilded vibration membrane microphone|
|Signal Processing Circuit||DSP,AGC,ALC|
|Protective Circuit|| Lightning protection, power supply polarity reverse connect protection,
|Connection Way|| 3 leading wires
(red lead is power+, white lead is audio signal+, black is power-&audio signal-)
|Transmission Cable||RVVP3*0.5mm2 shield cable|
|Supply Voltage|| DC10V~18V
(recommend to use 12V, more than 500 meters recommended 15V)
|Housing Material||Advanced resin PVC+Spray diffusion coating|
|Product Size||63 mm*23mm|
|Place of Origin||Guangzhou, China|
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