Small Dome CCTV Microphone COTT- QD20

  • Pickup Area: 10-80㎡(adjustable)
  • Transmission Distance: 3000M
  • Frequency Response: 20Hz~20kHz
  • Sensitivity: -45dB
  • SNR: 70dB(1m40dB) 50dB(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: Electret condenser microphones
  • Microphone Quantity: 1pcs
  • Signal Processing Directional: Logic dolby surround sound system, 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: 50mA
  • Working Environment: -25℃~70℃
  • Color: White
  • Housing Material: Advanced resin PVC
  • Product Size: 72mm×44mm
  • Weight: 40g
  • Place of Origin: Guangzhou,China
  • Supply Ability: Spot Goods
  • Approvals: CE, ROHS, FCC, ISO9001

Product Overview

● QD20 Small dome audio pickup, designed for audio monitoring, the advantages of big monitoring range and high sensitivity.
● Dome appearance, the surface design with four line lattice, better to collect environment sound within 10-80㎡.
● Internal circuit with AGC gain control and power amplification circuit, maximumly eliminate the noise, to guarantee the output intensity.
● Using directional logic dolby surround sound system, effectively reduce the high frequency and low frequency noise of environment and circuit.
● Built-in lightning protection, power supply polarity reverse connect protection, ESD protection and power protection module.
● Long audio signal transmission technology, 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 the banks, factory, schools, interrogation room, prison and any places need to monitoring.
● 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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