Security phone for house 1.Support 3G and GSM. 2.Door ... and gas sensor and light control,SOS function. Security phone for house! Main functons: Main Functions:1, support 900/ ... handset state .6, 12 kinds of incoming call tones for section and mute choice.7, Sending messages and it ... then phone .9, Displaying date, time, signal strength and battery status, guide logo.10,Save search, delete and dial ...