Power goes off and comes back on send SMS function, with a backup battery, no longer have to worry about burglar cut off the power and make the alarm failure, Arming and alarm deactivation can be conveniently done by remote control, app rfid card or call.
Long range singnal, the door sensor built in long antenna, can covers up to 2, 500sq. ft. You can Choose the Alarm kit that fits your needs and add additional components and accessories at any time. such as motion detector, shock sensor, range extention, water leak sensor etc.