1. Buy 20m radius Jammer with 4 bands cuts off GPS & Cell Phone Signals 3G+GSM+4G Jammer, price $142
    Buy 20m radius Jammer with 4 bands cuts off GPS & Cell Phone Signals 3G+GSM+4G Jammer, price $142
    Buy 20m radius Jammer with 4 bands cuts off GPS & Cell Phone Signals 3G+GSM+4G Jammer, price $142
    Description This cell phone jammer with 4 frequency bands is a perfect tool for blocking such signals as CDMA, GSM, DCS and GPS (1570-1580MHz). 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 in a car with car charger. All the TX frequencies cover downlink only, which will not affect the base station. 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: Intended to block: Cell phone signal (CDMA, GSM, DCS, 3G), GPS (1570-1580MHz) Total output power: 4W Effective blocking range: Up to 20 Meters. Work time: 90 minutes, can work while 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 American and Asia Market -GPS: 1570 - 1580 MHz -CDMA GSM: 850-960 MHz -DCS PHS: 1805-1990 MHz -3G: 2110-2170MHz Temperature: -10? to +50? 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 AC Charger Car Charger Antennas х 4 User Manual х 1

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