RF Amplifier: 1,To amplify all signals in the whole band; ... repeater; 3,Easy installation; Applications:The Wide Band Selective GSM RF Repeater to expand signal coverage of signal blind areas where ... , VSWR, Output Power, Gain, Uplink ATT, Downlink ATT and etc.Remote Control Module(Optional)RS232 + Wireless Modem + Chargeable Li-ion Battery ...