Features:
1.Place the alarm on the floor behind the door. when somebody push the door. the alarm will emit 120dB sound with red flash light. and the door could not be opened.
2. Press the button to "L". start the alarm. Press the button to "H". turn on the sensor function.
Description:
1. Can be used as a door stop when switch is off.
2. Special design for use at home. office. hotel rooms.
3. Battery: one DC9V battery
Package Included:
1 * Door Stop Alarm