Cell Phone Signal Booster for Home and Office Use - Band 2/5 Cellular Repeater Kit Boosts Verizon, AT&T, T-mobile GSM 3G Voice, Call and Text Up to 4,500 Sq Ft. Support Multi Devices. (850/1900MHz)

The booster can improve your indoor voice and data signal, help avoid dropped calls and improve your voice and video quality.Supports multiple simultaneous users, so all your family can share better signal with one booster.Both the 2 antennas with high gain, it will bring you strong signal in 4500 square feet.Panel antenna broadcasts signal in one direction and is generally mounted on a wall, It is suitable for large house, office or long rectangular spaces.Directional outdoor yagi antenna should be aimed at the near tower to get best reception. Frequency Range: Band 2, Band 5 Max. Gain: 65dB Max. Output Power: 20dBm Automatic Gain Control: ≧20dB I/O Port: N-female Impedance: 50 ohm Power Supply: Input AC 100~240V 50/60Hz, Output DC 5V The booster can only amplify signal but cant create signal. If there is no signal outside, it wont work, please make sure you get 1-2 bars signal outside.The booster can only boost signal for cell phones on band 2 and band 5, Please check which band your cell phone is using by the methods below:Dial *3001#12345#*, then press Call buttonClick Serving Cell InfoCheck Freq Band Indicator;Download and install "LTE Discovery" APP,Click ‘SIGNALS’ and check band number.