Sell Gsm Alarm System For Home&commerce

No need of telephone line in order to have your location fully protected 
Program the duration length of the siren.  
Password protected.
Record your own personal message for ten seconds
Up to 6 telephone numbers can be pre-stored in the unit and dialed to summon help in priority order.
Remote command and access to the system from anywhere via any telephone/mobile 
Emergency/panic button is available for 24 hours whenever arm/disarm 
Separately arm/disarm for certain detected areas 
Able to link up to the networks of alarm center through an ID code