1) No need of telephone line 2) Password protected 3) Record your own personal message for ten seconds 4) 6 telephone numbers can be pre-stored in the unit and dialed to summon help in priority order 5) Remote control to the system from anywhere via any telephone/mobile or short message system 6) Emergency/panic button is available for 24 hours whenever arm/disarm 7) Separately arm/disarm for certain detected areas 8) Able to link up to the networks of alarm center through an ID code