Main Function Wireless sign transmitted, no wire connected, easy installation Local arm/disarm with remote controller, easy operation Remote arm/disarm by telephone or mobile Provide protection against burglary, fire and gas leak Support emergency SOS Support voice alarm or voiceless alarm in advance (Whether drive the siren) Drive high decibel siren to threaten burglary and notify neighbors, while alarming Support 6 user telephone or mobile phone numbers, which auto-dialed while host alarming Monitor the noise of the guarding space through phone If the telephone line connected with the host is cut off, the host drives the siren immediately Support alarm if the host is closed or dismantled abnormally Equip standby rechargeable battery