Best cell phone call blocker apps 2017 , Buy 4W GPS & Cell Phone Signals Blocker with 20m blocking radius 3G+GSM+4G Jammer, price $142

Buy 4W GPS & Cell Phone Signals Blocker with 20m blocking radius 3G+GSM+4G Jammer, price $142

Description This cell phone jammer with 4 antennas  is a perfect tool for blocking such signals as CDMA, GSM, DCS, 3G and GPS. The blocking range of this jammer varies in dependence with signal strength and reaches up to 20 meters . The jammer is powered by AC adapter. This jammer can be used even while charging. This jammer is suitable for places where silent atmosphere is required, foe example, during the negotiations or any other serious meeting, also it can be used at schools and universities during exams to avoid cheating. In addition, the jammer can be used in cinemas, theaters, churches, libraries, law courts, military units, banks, hospitals, meeting rooms, etc.     At a Glance: This product can be used in any place where mobile phones and GPS are prohibited to be used! Cover interface standards: Cell phone signal (CDMA, GSM, DCS, 3G), GPS (1570-1580MHz) Total output power: 4W Effective range: Radius Up to 20 Meters. Work time: 90 minutes, this jammer can continue to work when charging, Support being powered by charger or car cigarette charger. Every band frequency can select output power. All the TX frequencies cover downlink only. Specifications: Radius range: 2-20M depending on the mobile service provider’s network condition Europe and Middle East Market -GPS: 1570-1580 MHz -GSM900: 925-960 MHz -GSM1800: 1805-1880 MHz -3G: 2110-2170 MHz Temperature: -10? to +50C Humidity: 5% to 80% Power supply: AC100-240V/DC12V Continue using time:Around 90 minutes Weight: 0.4KG/PCS                                                               Dimension: (W*H*L): 32*112*62mm (not include antennas. )  Accessories: Jammer x 1 AC Charger x 1 Car Charger x 1Antennas х 4User Manual х 1

best cell phone call blocker apps 2017

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