Application: Mount the alarm on door/window, the unit alarms to alert people when some one appears. The alarming can be terminated by the remote controller Features: >>> Ideal design for security of entrance (door, window, cabinet e.g.) Easy to install and operate Remote control from all directions; energy-saving and long working distance. Arm or disarm the system by transmitter with different indication sounds. Alarm volume is more than 110dB.Battery operated Low battery indicator