Is there a cell phone signal booster that works | Wholesale Walkie-Talkie Jammer

Wholesale Walkie-Talkie Jammer

Product Description Product Specifications:Main Feature: 5 Bands Handheld Cell Phone Jammer, GPS Jammer and Wifi Signal Jammer with Single-Band Control (For Worldwide all Networks), Each band can work separately or simultaneously.Isolating Signal Bandwidth:- CDMA/GSM: 850MHz - 960MHz- DCS/PCS: 1805MHz - 1990MHz- 3G: 2110MHz - 2170MHz- GPS: 1570MHz - 1580MHz- WIFI: 2400MHz - 2485MHzShielding Radius Range: up to 20 Meters (depending on the mobile service provider's network condition and background signal strength)Power Source: Wall plug, car adapter, or built-in batteryTotal output power: 2.5W, Small size design,each bands can adjust to ON or OFF powerExternal Omni-directional antennas all the TX frequency covered down link onlyPower supply: 50 to 60Hz, 100 to 240V ACWith AC adapter (AC100-240V-DC12V),4000mAH batteryDimension: 126x76x35mm and not include antennasInner box dimension:275x150x80mmSuitable for: Police and Meeting Room, Security Services, Military Units,Prisons, Banks, Churches, Conference Rooms, Classrooms, Secret Services, News Conference Rooms, Libraries, Museums, Customs, Houses.ODM and OEM orders are welcomeFeature and Advantage:Multiple bands, Can adjust ON or turn off any single band without influencing the other bands operationHigh output powerCooling fan inside, Could be used in car directly,With car charger and AC chargerWith Built-in Battery: 4000mA/h,Charge full time about 4Hours,Working time:1-2HoursAccessories:AC Power Charger (we will send correct standard power charger which according customer's shipping address)Car chargerDetachable Antenna x 5English User Manual(If you need, we will send the scan file via email, it will avoid some possible custom issue)Use Notes:Be sure to connect all the antennae before the power supply is switch on.When you get the device in the first time, recharge the device only after the power is used out. To prolong the lifespan of the device, try to recharge it no less than 12 Hours.Any sealed mark on the machine teared are void, excluding from the repaired service.Do not put the jammer in the water and fire to avoid using in the bad, Condition of over-wet, over-hot, high voltage and high magnetism.Antenna shall be used vertical to the ground, working more efficiently.PCS1900 Signal Jammer,DCS1800 Signal Jammer,GSM900 Signal Jammer,CDMA800 Signal Jammer,1900~1990MHz Signal Jammer,1805~1880MHz Signal Jammer,925~960MHz Signal Jammer,869~894MHz Signal Jammer,Cellphone Jammer

is there a cell phone signal booster that works

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