... power, transportation, petroleum, coal, railway and municipal department, public security departments.Functions of GSM intelligent burglar alarm:1) Available two ... 900/1800 / 850/1900MHz;7) With color LCD screen, keypad with blue light when operate;8) Three-level password protection ... wired door/window magnetic contact;15) Four way arm/disarm: keypad, remote, phone and SMS;16) 6 mobile phone numbers ...