Sell COD - Tri band 2G 3G 4G Cell Phone Signal Booster Mobile Signal Repeater Booster Tri Band Amplifier best price

Product Description Product Description Frequency Range Uplink: 890~915/1920~1980/2500~2570MHz Frequency Range Downlink:935~960/2110~2170/2620~2690MHz Gain: 70dB Output Power: 23dBm Power Adapter: EU/US/AU/UK Plug Power supply: AC:110～220V; DC:12V 2A Connector Type: N Female Coverage: Up to 500 sqm without barrier Improve Network Type: 2G Voice and 3G 4G Internet Data Before buying please note!!! 1.Make sure the frequency band of your carrier is suitable for this item.Otherwise the device can't work for you. If you do not so clear the frequency of your phone, you could click this linkfor check the frequency band of your carriers. 2.Make sure you can receive the good signal that you want to amplify on the house outside.On your mobile phone can show.Otherwise the booster may can not improve your signal.Below is the method to check the mobile phone signal strength. 3. The distance between the outdoor antenna and the host must be at least 5-7 meters 3. Be careful not to lean the host computer against the balcony door, because it may cause self-excitation, which will cause the host display to burn out after a few months Installation Instructions: Best to install the outdoor antenna directed to the base station (The booster antenna) so please fix the outdoor antenna when the signal repeater shows the strongest signal and then connect and fix the indoor antenna. The straight like distance between the signal repeater and outdoor or indoor antenna should be larger than 5m or equal tp 5m. If you install the outdoor antenna on the roof, you must make sure that the drop distance between the outdoor and indoor antennas is 3-5 meters or more, so as to avoid the signal sent by the indoor antenna is received by outdoor antenna. If you install the outdoor antenna on the balcony, then must make sure the distance between the outdoor and indoor antenna is larger than 5-8 meters, the larger the distance is, the stronger the signal is.