Brand Name: TFXSIGBOS Model Number: EK91-GW GSM 900mhz Frequency Range: Uplink:890-915mhz;Downlink:935-960mhz WCDMA 2100mhz Frequency Range: Uplink:1920-1980mhz;Downlink:2110-2170mhz Gain: 70±2dB Work for: 2g GSM 900mhz / 3g WCDMA 2100 mhz /4g DCS 1800mhz Signal Problems Output power: 23dBm Product size: 235x182x21mm In the box: only one signal booster and one plug Power Supply: AC110V~220V;DC+12V/2A