... for Fire,Thief, Water,Gas,Dangerous 3.Public security--shop mall ect. Security phone for house OR SHOPE ! Main functons:Main Functions ... :1, support 900/1800 MHz2, Seed dial and redial function.3, Phone book ... be setting into by SMS. Phone . SMS and then phone .9, Displaying date, time, signal strength and battery status, guide logo.10, ...