... gas sensor and light control,SOS function. Security phone for house!Main functons: Main Functions:1, support 900/1800 ... handset state.6, 12 kinds of incoming call tones for section and mute choice.7, Sending messages and it ... break in, it will send signal to based telephone,then the telephone will alarm and send message or call default ... 9001, CE, ROSH etc. Home Alarm system Alarm telephone set for home