HD Pinhole CCTV Microphone COTT - QD30

  • Pickup Area: 5-150㎡(adjustable)
  • Transmission Distance: 3000M
  • Frequency Response: 20Hz~20kHz
  • Sensitivity: -40dB
  • SNR: 70dB(1m40dB)50dB(10m40dB)1KHz
  • Directional Property: Omnidirectional
  • Dynamic Range: 104dB (1KHz at Max dB SPL)
  • Max Sound Pressure: 120dB SPL (1KHz,THD 1%)
  • Output Impedance: 600 ~ 1000Ω non-equilibrium
  • Output Signal Amplitude: 2.5Vpp/-25db
  • Microphone: BOURNS large gilded vibration membrane microphones
  • Microphone Quantity: 1pcs
  • Signal Processing: DSP, AGC, ALC
  • Protective Circuit: Lightning protection, power supply polarity reverse connect protection, ESD protection
  • Connection Way: 3 leading wires(red lead is power positive wire, white lead is audio positive, black is public ground wire)/AV wiring system(DC female, RCA)
  • Transmission Cable: RVVP3×0.5mm2 shield cable
  • Supply Voltage: DC10V~18V (recommend to use 12V, more than 500 meters recommended 15V)
  • Working Current: 40mA
  • Working Environment: -25℃~70℃
  • Color: White
  • Housing Material: Advanced resinPVC+Spray diffusion coating
  • Product Size: 63 mm×25mm
  • Weight: 25g
  • Place of Origin: Guangzhou,China
  • Supply Ability: Spot Goods
  • Approvals: CE, ROHS, FCC, ISO9001

Product Overview

● Specially designed for prison interrogation system of synchronous recording, pinhole type design, hidden installation.
● The Advanced resin material "honeycomb" collect sound design, completely eliminate "hiss" electronic noise.
● BOURNS large gilded vibration membrane microphones, 5~50㎡ in high fidelity, high sensitivity, high bandwidth and low noise.
● Using 0.8mm pinhole type design, its internal resonance spoke after precise calculation, the sound is more clearly.
● Unique dolby omnidirectional logic surround sound standard design, built-in high-speed voice DSP processing units, two level dynamic noise reduction processing.
● Built-in AGC noise reduction signal processing circuit, effectively reduce serious echo of empty room.
● Built-in ALC level control circuit, automatically adjust high, low intensity of voice and instantaneous voltage and current surge.
● Long audio signal transmission technology, use the RVVP3 x 0.5mm2 shield cable, it is distortionless within 3km.
● Integrated professional front audio amplifier circuit, direct drive, active speakers, DVR, earphones, etc.
● Applicable to interrogation room, courts, public security organs, procuratorate, banks and other any places need to monitor, give full play to the effect of high-fidelity sound pickup.
● Gain patent certificate of State Intellectual Property Office of The People's Republic of China.
● Gain computer software copyright of National Copyright Administration of The People's Republic of China.


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Guangzhou Sizheng Electronic Technology Co.,Ltd.

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