Phonetone 55dB 850/1900MHz Amplifier With Indoor Panel Antenna And Outdoor Broadband Omni Antenna For Home Or Office Large Coverage Type: Booster Color: Gray/White Coverage: 2500 sq ft Frequency: Frequency Range:824-849MHz/1850-1910MHz,869-894MHz/ 1930-1990MHz Gain: Max. Gain (dB):55dB Connector: Connector:N-Female Power Requirements: Main Power:AC 100~240V / DC12V 2A