1900MHz 55dB High Gain Cell phone Signal Booster Repeater Amplifier Support 3G/GSM/CDMA/WCDMA for Home/Office Use Type: Booster Color: White/Black Compatible Carrier: All Carrier work on 190Mhz Coverage: 3500 sq ft Frequency: Frequency Range:1850-1910MHz,1930-1990MHz Gain: Max. Gain(dB):55dB Connector: I/O Port : N-female on both ends Power Requirements: Main Power :AC 100~240V / DC12V 2A