Scope of application: A. Blind areas with weak or weak signals, such as underground or semi-buried business places, basements, underground parking lots, etc. ; B. Complaints from small thermal signal areas, such as conference rooms, small supermarkets, small shopping centers, offices and small public areas, etc. ; C. Areas with high traffic and strong social influence, such as bars, cafes, dance halls, cafes, fitness clubs, leisure and entertainment, etc. ; Placed on; E, home, office, luxury yacht, private car, public security system and traffic safety management, etc. Describe the operation steps of the repeater: 1) The external antenna receives the signal from the nearest mobile base station. 2) The external antenna sends the received signal to the installed repeater via the coaxial cable. 3) The repeater accepts the low signal and enhances it. 4) The enhanced signal goes to the internal antenna by connecting the coaxial cable. 5) Internal antenna sends a good enhanced signal to your phone. Installation method: 1) Fix the outdoor receiving antenna inside or outside the window and direct it to the signal tower. 2) Connect the outdoor antenna to the BTS port of the repeater via cable. 3) Also connect the indoor antenna to the mobile port of the repeater via cable. 4) Plug the power adapter into a power outlet and complete the installation. Specifications: Product Specifications: Voltage: 110-220V AC or DC5V 1A Frequency Range: 890MHz--915MHz (Uplink) 935MHz--960MHz (Downlink) Gain: Uplink: 55dBi Donwlink: 60db