Signalbox High Gain 62dB 2100MHz 3G WCDMA Cell Phone Signal Booster GSM Mobile Phone Signal Repeater with 3G Yagi and Celling Antennas (White Cable) Frequency Range: 62dB 1920-1980MHz/2110-2170MHz Standard Supported : 2G/GSM CDMA 3G/WCDMA 4G/LTE NOTICE: Please make choice before buying it. If you do not sure the Repeater's frequency you need, we can help you select a right one for you.we have all USA frequency amplifier .so feel free contact us please. I/O Port : N-female on both ends Power Supply : Input AC 100~240V / DC 5V 2A