Build cell phone jammer , block cell phone signals in building

Product Details Product Description This Selectable Portable 3G Cell Phone WiFi Jammer & GPS Signal Jammer that you are viewing here is the new designed signal jammer that is designed with the ability to cut off the signals of GSM, DCS, PCS, 3G,4G, 4G LTE,4G WiMax and WiFi GPS , i at the same time. The powerful jammer has a wide affected frequency ranges to include CDMA/GSM, DCS/PCS, 3G, 4G LTE, 4G Wimax and WiFi GPS  . It also has a jamming range up to 20m, depending on the signal strength in the given area. Within the range, just turn on the jammer, all wireless connection to 2G, 3G, 4G or WiFi network will be disabled at the same time. Also, the jammer is a selectable unit. In other word, user can choose to allow operation of one or a few of frequency bands. Adjustment of ON or OFF any of the single bands will not cause any disruption to the operation of others.. More details and specifications of this selectable handheld 2G 3G 4G WiFi  GPS jammer are just as follows, if you want to know more just come and get the overall information. Specifications Isolating Signal Bandwidth: -CDMA/GSM: 851-960MHz-DCS: 1805-1880MHz-PCS: 1930-1990MHz-3G:  2110-2170MHz-4G LTE:(USA:725-770MHz) or (Europe:790-826MHz)-4G Wimax:(USA:2345-2400MHz) or (Europe:2620-2690MHz)-WiFi: 2400-2500MHz-GPS: 1500-1600MHz Power Supply:AC 110~250V to DC 12V, car 12V to DC 12VBattery: Li- ion battery DC7.4V/3600mA/hBattery Working Time: 2 or 3 hours maximumCharger time: Around 6 hoursTotal output power:6WJamming Range: Up to 20M (depend on cell phone signal Length)Antennas Details: high-tech rubber (8 units)Dimensions Of Device:  132x80x40mmWeight Of Product: 1.0kgColor: Black Accessories 8*AntennasCar ChargerAC Charger