Signalbox 62dB 850MHz Cell Phone Signal Booster Repeater with Directional Antennas Color: Black Compatible Phone Manufacturer: All Phones Work on 850MHz Compatible Carrier: All Carrier Work on 850MHz Support Network: 2G, 3G, GSM, WCDMA Frequency: 824--849MHz/869--894MHz Gain: 62dB Connector: N-female Power Requirements: Power Supply : Input AC 90-260V, Output DC 12V/ 2.5A