Door Stopper Security Alarm, Alert Door Stop Alarm for Travel Home Apartment House

DOOR STOPPER SECURITY ALARM – the door stopper alarm in “on” status, when door pressure is applied, the door alarm will be triggered while make extremely loud 120db alarm, helps wake/alert homeowner or renter, helps deter intruder and possibly notifies neighbors, security protection.
NON-SKID DOOR STOPPER – the door stopper alarm in “off” status, it can be used as common damping rubber base door wedge, hold door in open positioning any loud alarm sound.
EASY INSTALLATION – no wiring needed; battery-operated (requires 1x9V battery, not included);place it under the door, the gap between the bottom of the door and the floor should be 10mm(0.38 in) to 35mm(1.35 in),it can not slide on tile when door opens, smooth floor can try to use H-type sensitivity, vibration-sensing alarm.
3 SENSITIVITY LEVELS – Low – Medium – High, with an adjustable sensitivity switch on the side;H level is the most sensitive level that vibration will trigger an alarm; please note when the alarm sound gradually becomes smaller, it means to replace the new battery.