30 visiting now: 21 USA USA flag 5 China China flag 2 Germany Germany flag 1 France France flag 1 Russia Russia flag

Highlighted Companies

  • CIDG Egyptian Marble and Granite (Egypt): Creative Interior Design Group for Egyptian marble and granite was established since 2006 to... http://www.cidegypt.com

  • Cott S30 Hd Low Noise Digital Cctv Audio Microphone Sound Monitor Pickup Mic For Security System - China

    price: 46.00 Dollar US$

    Specifications of SIZHENG COTT-S30 cctv audio microphone Items Performance Metrics
    Adapterization Area 10-120 square meters (adjustable)
    Audio Transmission Distance 3000m
    Frequency Response 20Hz ~ 20KHz(90dB sound pressure, A weighting)
    Sensitivity -35dB(10.0mV e 1V at 1Pa)
    SNR 70dB(1m40dB sound pressure) 45dB(10m40dB sound pressure) 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 complementary enhance digital capacitor microphone
    Microphone Quantity 1pcs
    Signal Processing Circuit AGC & 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 lead is audio signal+, black is power-&audio signal-)
    Transmission Cable Telephone wire, 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+Double-deck metal stoving varnish net
    Product Size 80mm*25mm
    Product Weight 90g
    Place of Origin Guangzhou, China
    Approvals CE, ROHS, FCC, ISO9001

    Company Contact:

    • Phone: +8613570445556

    • Address: Baishashui Road,Changban industries Area,16th building,3th Floor, Guangzhou, Guangdong, China

    • Email: Email

    Published date: March 1, 2018 -

    • Business Description: We are the manufacturer of CCTV microphones be the audio frequency solution provider of Chinese industry-leading at present, selling different audio monitoring for CCTV cameras and related products. As a domestic real audio scheme developer, Sizheng is committed to provide users with the most conforms to the actual demand plan and products. At present, Sizheng products and solutions have been used by more than 6000 companies in China and abroad.

    Related listings

    • Anti Explosion And High Temperature Protection H 265 4k 8mp Wdr Star Light Ip Camera
      Anti Explosion And High Temperature Protection H 265 4k 8mp Wdr Star Light Ip Camera
      Security surveillance and detection - HTW Tech Limited - China - December 22, 2017 - 398.00 Dollar US$

      Anti-Explosion& High Temperature Protection IP Camera H.265 HDR/WDR Camera 1/2.5” 8Megapixel STARVIS™ CMOS Sensor 5mm 12mp Lens 4 pcs Array LEDs Built-in IR Cutter Filter Built-in TF Card Slot Built-in PoE (IEEE 802.3af Class3) withTwo-way Audio,...

    • H 265 4k 8 0mp Wdr Ip Camera
      H 265 4k 8 0mp Wdr Ip Camera
      Security surveillance and detection - HTW Tech Limited - China - December 22, 2017 - 238.00 Dollar US$

      H.265 4K 8MP WDR IP Bullet Camera 1.2.5” SONY HD WDR Sensor Super H.265 Compression 5mm True 4K Lens 42 pcs Φ5 IR LEDs Built-in IR Cutter Filter Built-in PoE, Super Star-Light With Two-way Audio, Alarm in, BNC Out, RS-485, USB, Restore TF Card (optio...

    • 55inch Lcd Video Wall
      55inch Lcd Video Wall
      Security surveillance and detection - SHENZHEN ANWELL INDUSTRY CO.,LIMITED - China - September 16, 2017 - 900.00 Dollar US$

      LCD Panel Model 55inch 4k uhd lcd video wall did Resolution 1920×1080(H×V) Pixel Pitch 0.63×0.63(mm) Brightness 450(cd/ m ) Contrast Ratio 3000:1 Response Time 6ms Display Color 16.7M Viewing Angle 178°(H) / 178°(V) Image Aspect Ratio 16:9 Compensati...

    Safe Trade Tips

    • Ask for business references and check them
    • Use a payment method that offers better protection for all such as Letters of credit and verified professional escrow services. Avoid payments in advance such as money transfers
    • Verify their business via their local Chamber of Commerce
    • Search the internet using their website address, their business name, their phone and fax numbers, and their email addresses to see if you can find any feedback about them.
    • Get to know more about scams to avoid: Internet Crime Complaint Center - International Financial Scams
    • This site is never involved in any transaction, and does not handle payments, shipping, guarantee transactions, provide escrow services, or offer "buyer protection" or "seller certification"