K1B170073CYW Frequency Range :1710-1755/2110-2155MHz Standard Supported : CDMA, WCDMA, GSM, EDGE, TDMA and AMPS etc.Allows Multiple Phones. Boost cell phone signal to make call and send text. Max. Gain (dB) :70dB / I/O Port : N-female on both ends INPUT :AC 100~240V / DC 12V 2A FCC authentication certificated