SIZHENG COTT QD55 HD wide range monitor voice CCTV audio microphone high sensitivity pickup sound for security camera in CCTV Microphone from Security Protection

SIZHENG COTT QD55 HD wide range monitor voice CCTV audio microphone high sensitivity pickup sound for security camera in CCTV Microphone from Security Protection
SIZHENG COTT QD55 HD wide range monitor voice CCTV audio microphone high sensitivity pickup sound for security camera in CCTV Microphone from Security Protection
SIZHENG COTT QD55 HD wide range monitor voice CCTV audio microphone high sensitivity pickup sound for security camera in CCTV Microphone from Security Protection

Product Specification

Brand Name: SIZHENG

Model Number: COTT-QD55

Type: CCTV microphone for security camera

Sound Monitor Range: 10-80 square meters (adjustable)

Sensitivity: -35dB

Power Supply: DC12V (more than 500 meters recommended 15 v)

Working Current: 20mA

Working Environment: -25℃~70℃

Connection Way: 3 leading wires

Color: White

Warranty: 12 months

Place of Origin: Gongdong, China (Mainland)

Description:

55

SIZHENG COTT-QD55 HD wide range monitor voice CCTV audio microphone high sensitivity pickup sound for security camera  

 Key Features of SIZHENG QD55 cctv audio microphone 

1.COTT-QD55 circular HD audio monitoring microphone, 360°monitor pickup, capture the surrounding small sound.

2.The structure of new housing and metal net design is simple and fashion, to make an impression.

3.Built-in AGC and DTS noise reduction signal processing circuit, automatically adjust high strength voice and instantaneous impact sound.

4.Built-in newest DNP and DSP digital processing unit, enhance sensitivity to highlight human voice.

5.Built-in micro adjustment potentiometer, has a keen front sensitivity, its back snap-in type meet a variety of environmental installation.

6.The echo cancellation technology of international leading level, effectively reduce serious echo of empty room.

7.ATDA dynamic noise level detection, adaptive bandpass filter, effectively prevent the speech signal distortion and attenuation.

8.Long audio signal transmission technology, use the RVVP3*0.5mm2 shield cable, it is distortionless within 3km.

9.Integrated professional front audio amplifier circuit, direct drive active speakers, DVR, earphones, etc.

10.Widely used in banks, schools, interrogation rooms, prison and other indoor environment for synchronous video audio monitor recording.

 

 Specifications of SIZHENG QD55 cctv audio microphone 

Items   Performance Metrics   
Audio Monitor Range 10-80 square meters (adjustable)
Audio 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
Signal Amplitude 2.5Vpp/-25db
Microphone  High fidelity silver plated vibration membrane capacitor microphone
Microphone Quantity 1pcs
Signal Processing Circuit DSP,AGC,ALC
Protective Circuit Lightning protection, power supply polarity reverse connect protection,
ESD protection
Connection Way

3 leading wires
(red is power+, white 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)
Working Current 20mA
Housing Material Advanced resin PVC
Color White
Weight 62g
Product Size 86mm*22mm
Approvals CE,ROHS,FCC, ISO9001
Place of Origin Guangzhou, China

 

 Product Photos                                     

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Instruction:

 

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4.Shipping:

1.We will send the goods within 7 working days after your payment is verify by Aliexpress.

2.Our free shipping only included China post air mail, and the weight should be within 2KG. Please notice the China post air mail are slowly. If the weight over 2KG, you should responsible for the shipping cost.

3.If you want to send by EMS, DHL and UPS, you should pay for the shipping cost.

4.You will trace the goods online after sending the goods 3-7 working days.

5.Please check your goods on the shipping company when you receive the goods.

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