65dB GSM Cellular Phone Signal Amplifier(GSM900,9dB Outdoor Antenna) Frequency range (Mhz)	GSM/DCS 890-915/925-960mhz 1710-1785/1805-1880 Gain (dB)	65 Ripple in Band	8dB Max. Input Power Without Damage	0 dBm Return loss	-8 dB Transmission delay (s)	0.5 s RF Connector	N -Female I/O impedence ()	50  Installation Type	Wall Installation Environment Conditions	-10C-50C Power Supply	DC 12V 2 Years free warranty from Lightinthebox.com!!