Details : Cell phone becomes especially helpful when people get into critical situations. In case of emergency a timely call can save somebody’s life. Unfortunately, there are still some places where they can find themselves “out of coverage” no signal at all... Usually those places are either too far from the cell phone base station or located inside underground constructions, for example:Parking lots, tunnelsBig stores, office buildingsCars, boats etc. House in remote areas. Office Area, Factory, Hospital, Warehouse, Home, How Does It works : The outside antenna catches low signal from operator servicer’s base station and delivers it to cell phone repeater through the connection cable (coax). After the signal is accepted by the mobile repeater this device amplifies it. Then this amplified signal goes through the connection cable (coax) to the inside antenna. And after that the amplified signal transmits to your cell phone. Finally your cell phone will get good signal never on and off. WHY CHOOSE LINTRATEK? Excellent Quality Exquisite appearance High Technology Considerate service Support Multi Users Full Kit 1Booster 2Antenna 10 Mtr Cable with connector & 2Mtr Cable With Connector Power Adapter.