... and gas sensor and light control,SOS function. Security phone for house!Main functons: Main Functions:1, support ... 900/1800 MHz2, Seed dial and redial function3, Phone book function.4, Hand free function.5, Adjusting the ... Alarm ways can be setting into by SMS. Phone . SMS and then phone .9, Displaying date, time, signal strength ... ISO 9001, CE, ROSH etc. Home Alarm system Alarm telephone set for home