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Description:Cellphone Jammer for public spaces. High powered. No minimum order. Shipped worldwide, 12 month warranty. Order directly from the online shop. Pay by credit card (paypal) or bank transfer. Price for one sample under USD 90.00 China Manufacturer Specifications # 4-channel type can efficiently provide jammer for mobile signals from CDMA, GSM, DCS, and PHS # It only jammer/isolate the signals from mobile phone and does not affect the normal operation of other electronic devices # Generally, best jammer/isolate situation is place more than 200 meters away from the Base station # Switching on, it can work stably for long-time Technical Parameters # Effective jammer/isolate diameter: 100meters # Jammer/isolation bandwidth: CDMA: 869 ~ 894Mhz; GSM: 925 ~ 960Mhz; DCS: 1805 ~ 1880Mhz; PHS: 1900 ~1990Mhz # Environment temperature: -40 deg C~ +55 deg C # Relative humidity: 30% ~95% # Power adapter: Input AC110V ~240V, Output: DC 5V # Physical Sizes: 22.5x14.5x5.5(LxWxH) # Weight: 2kg/unit # Manufacturer and Origin: China # Login at for wholesale discount prices, no MOQ # Please contact us if you have any specific queries about this device