Features: 1) 8 defense zones 2) Password protection 3) Wireless-learning remote control, and other detectors 4) Program the duration length of the siren. 5) Time delay to arm/disarm 6) Telephone line anti-cut function 7) Record your own personal message for ten seconds 8) Up to 6 telephone numbers can be pre-stored in the unit and dialed to summon help in priority order 9) Remote command and access to the system from anywhere via a telephone / mobile 10) Emergency/panic button is available for 24 hours whenever arm/disarm 11) Back-up rechargeable battery available for 36 hours when power is in failure 12) Able to link up to the networks of alarm center through an ID code 13) Power supply: input: AC 110V / 220V, 230 - 240V; output: DC 9V, 300mA 14) Frequency: 315MHz/433MHz 15) Stand-by current: =110dB 19) Temperature range: -10 to 50°C 20) Relative humidity: