main function:

Build-in siren and the alarm sound is adjustable.
Chirm function when arm or disarm.
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 a telephone/mobile
Emergency/panic button is available for 24 hours whenever arm/disarm 
Mute/audible alarm is at user's option 
Separately arm/disarm for certain detected areas 
Back-up rechargeable battery available for 36 hours when power is in failure 
Able to link up to the networks of alarm center through an ID code 

Standard Unit: one main panel with build-in siren, one advanced PIR, one door magnetic detetctor, two remotes, one power adapter.

In addition: Wireless Smoke detector, gas leakage detector, external mini siren.....