Can work for global users with 6 languages (English / Russian / Spanish / German / French / Chinese); With touch keys can set Arm/Disarm/Home arm mode on alarm panel; Direct phone call via the keypad; Learning code for wireless detectors; Two-way communication; 24 wireless zones 6 special fire alarm zones and 14 remote controller 6 panic buttons and 2 wired zones; Equipped with 3 SMS alarm numbers and 3 phone calls; Delay alarm function (0~60 seconds for optional); Setup siren alert time (0~254 seconds for optional); 2 wireless relay output; Remote control alarm host via SMS command and phone calls; Home mode arm function; Record voice for 10 seconds; External power failure / recovery alarm function (optional); With backup battery working time >/=10 hours; GSM frequency: 850 / 900 / 1800 / 1900MHz quad band