Dome CCTV Microphone COTT-QD50

  • Pickup Area: 5-150㎡(adjustable)
  • Transmission Distance: 3000M
  • Frequency Response: 20Hz~20kHz
  • Sensitivity: -35dB
  • SNR: 85dB(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
  • OutputSignalAmplitude: 2.5Vpp/-25db
  • Microphone: High fidelity 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: 50mA
  • Working Environment: -25℃~70℃
  • Color: White
  • Housing Material: Advanced resin PVC+Spray Germany FLAYER diffusion coating
  • Product Size: 80 mm×47mm
  • Weight: 65g
  • Place of Origin: Guangzhou, China
  • Supply Ability: Spot Goods
  • Approvals: CE, ROHS, FCC, ISO9001

Product Overview

● COTT-QD50 Dome audio monitor specially designed for public security organs and procuratorate  industry of synchronous monitoring recording.
● Using UniGuard RFI shielding technology, prevent radio frequency interference, control noise of surrounding environment.
● Adopt cross spiral type sound hole, its internal resonance spoke after precise calculation, the sound is more clearly.
● Using honeycomb type to eliminate reflex phase distortion, control the echo, provide clear and high quality audio signal output.
● Using directional logic dolby surround sound system, built-in high-speed voice processing units, two level dynamic noise reduction processing.
● High fidelity silver plated vibration membrane capacitor microphone, 10~150㎡ in high fidelity, high sensitivity, and low noise.
● Built-in AGC and DTS noise reduction signal processing circuit, automatically adjust high strength sound and instantaneous impact sound.
● Unique design of the "electronic noise dynamic closed loop  suppression circuit", completely eliminate "hiss" electronic noise.
● Built-in lightning protection, power supply polarity reverse connect protection, ESD protection and power protection module.
● 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 public security organs interrogation room, prisons, finance, education and other places of synchronous audio monitoring recording.
● 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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