Circular HD CCTV Microphone COTT-QD55

  • Pickup Area: 10-100㎡(adjustable)
  • Transmission Distance: 3000M
  • Frequency Response: 20Hz~20kHz
  • Sensitivity: -35dB
  • SNR: 70dB(1m40dB)40dB(10m40dB) 1KHz at 1Pa
  • 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: Highfidelity silver plated vibration membrane capacitor microphone
  • 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: 20mA
  • Working Environment: -25℃~70℃
  • Color: White
  • Housing Material: Advanced resin PVC
  • Product Size: 86 mm×22mm
  • Weight: 62g
  • Place of Origin: Guangzhou, China
  • Supply Ability: Spot Goods
  • Approvals: CE, ROHS, FCC, ISO9001

Product Overview

● COTT-QD55 circular HD audio monitoring microphone, 360°monitor pickup, capture the surrounding small sound.
● The structure of new housing and metal net design is simple and fashion, to make an impression.
● Hi-Fi silver plated vibration membrane capacitor microphone, 10~100㎡ in high definition, high fidelity and high sensitivity.
● Built-in AGC and DTS noise reduction signal processing circuit, automatically adjust high strength voice and instantaneous impact sound.
● Built-in newest DNP and DSP digital processing unit, enhance sensitivity to highlight human voice.
● micro adjustment potentiometer, has a keen front sensitivity, its back snap-in type meet a variety of environmental installation.
● The echo cancellation technology of international leading level, effectively reduce serious echo of empty room.
● ATDA dynamic noise level detection, adaptive bandpass filter, effectively prevent the speech signal distortion and attenuation.
● Long audio signal transmission technology, use the RVVP3*0.5mm2 shield cable, it is distortionless within 3km.
● Integrated professional front audio amplifier circuit, direct drive active speakers, DVR, earphones, etc.
● Widely used in banks, schools, interrogation room, prison and other environment for synchronous video audio monitoring recording.


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Guangzhou Sizheng Electronic Technology Co.,Ltd.

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