ATT Cell Signal Booster Band 12/17 700Mhz 4G LTE Cell Phone Booster ATT Home Cell Phone Booster Repeater TONVE ATT Signal Booster Mobile Signal Booster Amplifier with Ceriling+Yagi Antenna Kit

The Smart LED Lights indicate working status, You can easily know if this signal booster works well or not.The booster can always provide best performance no matter how the outside signals vary.It will turn to standby mode when no users, so it can offer more safety and long-life performance.Share the strong signal with your friends and family, enjoy better reception at anytime and anywhere in your home and office.1. Receives Signal- The outside antenna reaches out to the cell tower to access voice and data signals.2. Transmits Signal- The booster receives the outside signal from the outside antenna.3. Boosts Signal- The booster amplifies the outside signal and sends it to the inside antenna.4. Expands Signal- The inside antenna broadcasts the boosted signal to devices inside the home.