SIZHENG COTT S2 CCTV audio microphone video surceillance ceiling listening device sound monitor for security camera in CCTV Microphone from Security Protection

SIZHENG COTT S2 CCTV audio microphone video surceillance ceiling listening device sound monitor for security camera in CCTV Microphone from Security Protection
SIZHENG COTT S2 CCTV audio microphone video surceillance ceiling listening device sound monitor for security camera in CCTV Microphone from Security Protection
SIZHENG COTT S2 CCTV audio microphone video surceillance ceiling listening device sound monitor for security camera in CCTV Microphone from Security Protection
SIZHENG COTT S2 CCTV audio microphone video surceillance ceiling listening device sound monitor for security camera in CCTV Microphone from Security Protection
SIZHENG COTT S2 CCTV audio microphone video surceillance ceiling listening device sound monitor for security camera in CCTV Microphone from Security Protection

Product Specification

Brand Name: SIZHENG

Model Number: COTT-S2

Type: CCTV microphone

Audio Monitor Range: 10-100 square meters

Sensitivity: -40dB

Power Supply : DC9V-20V (recommend to use 12V, more than 500 meters recommended 15V)

Working Current: 30mA

Working Environment: -25 Degrees Celsius ~70 Degrees Celsius

Product Size: 77mm*25mm

Output Impedance: 600 ~1000 ohm non-equilibrium

Main Material: Advanced resin PVC

Place of Origin: Guangzhou,China

Description:

SIZHENG COTT-S2 CCTV audio microphone video surceillance ceiling listening device sound monitor for security camera

COTT-S2 (2)

 

 Key Features of SIZHENG COTT-S2 cctv audio microphone 

1.Designed for the classroom, warehouse and conference room of synchronization audio monitoring recording,imported with original packaging kit assembly.

2.Using advanced resin PVC material "square array around" design, effectively collect all-round sound

3.Product surface spray "Nano" diffusion coating, high weathering resistance, can ceiling or side wall installation.

4.Integration of professional automatic identify noise processing technology and AGC and DTS noise reduction signal micro processor circuit.

5.Built-in lightning protection, power supply polarity reverse connect protection, ESD protection and power protection module.

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

7.Suitable for warehouses, conference room, ask room, classroom and other inside environment of synchronous audio and video monitoring recording.

 Specifications of SIZHENG COTT-S2 cctv audio microphone 

Items Performance Metrics
Audio Monitor Range 10-100 square meters (adjustable)
Audio Transmission Distance 3000m
Frequency Response 100Hz ~ 20KHz(90dB sound pressure,A weighting)
Sensitivity -40dB(10.0mV e 1V at 1Pa)
SNR 80dB(1m40dB) 80dB(10m40dB) 1KHz at 1Pa
Directional Property Omnidirectional
Dynamic Range 104dB (1KHz at Max dB SPL)
Equivalent Input Noise Level 2.5Vpp/10dB sound pressure(A weighting)
Maximum Gain 60db
Max Sound Pressure At 120dB SPL,THD < 1%    At 125dB SPL,THD = < 10%
Max Voice Output 2.5Vpp/80dB sound pressure(A weighting)
Output Signal Amplitude 2.5Vpp/100dB sound pressure(A weighting)
Output Impedance 600~1000Ω non-equilibrium
Microphone KaBoni advanced digital noise reduction capacitor microphone
Microphone Quantity 1pcs
Signal Processing Circuit Triangulation, DSP, Multistage dynamic noise reduction processing
Protective Circuit Lightning protection,power supply polarity reverse connect protection,
ESD protection
Connection Way 3 leading wires
( red lead is power+,white is audio signal+,black is power- & audio signal- )
Transmission Cable Network twisted pair, Shield cable
(pls use shield cable in complex electromagnetic environment)
Supply Voltage DC9V~20V 
(recommend to use 12V, more than 500 meters recommended 15V)
Working Current 30mA
Electromagnetic Compatibility GB 9254-2008
Reliability Index MTBF equal or greater than 80000 hours
Color White
Housing Material Advanced resin PVC
Product Size 77mm*25mm
Product Weight 60g
Place of Origin Guangzhou,China
Approvals CE,ROHS, FCC, ISO9001

 

 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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Download PDF

us, and the new China Central Television Headquarters (the cctv, hereafter) ...... stroyed Twin Towers predominantly defined the design proposals. As Scott .... were published (the essays 'Architecture and Limits i, ii, and iii' appeared .... ed in K. Sizheng Fan, “Culture for Sale: Western Classical Architecture in China's Recent.
https://brill.com/downloadpdf/book/edcoll/9789004376793/BP000004.xml

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