Specification:
Material: ABS Body + Stainless Steel Cover + Damping Rubber Base
Overall Size: 5.51 x 1.77 x 1.50 inch / 14cm x 4.5cm x 3.8cm
Alert: 120db
Weight: 89g/ Pcs
Power: 9V battery (NOT INCLUDE)

Features:
1. Wedge-shape design to fit any hinged door; Special design for use at home, office and hotel rooms
2. Adjustable high sensitivity. High/Medium/Low Sensitivities. Which depends on the distance door touch the door stop alarm.
3. No installation required, powered by one 9V battery, no wiring, easy to use, great for travelers.
4. Can be used as a doorstop when power switch is turned off, and 120db high-pitched continuous siren when activated, to scare and warn unknown intruders, while waking you up and alerting you to danger.

How to Use:
▶1. This alarm is operated by a 9V battery (NOT INCLUDE)
▶2. Open the battery door on the back side of the alarm unit And place a 9V battery in the battery compartment. Make sure the battery is installed currently before use.
▶3. After installing 9V battery, place the doorstop alarm behind a closed door to scure the room
▶4. If the secured door is opened, the edge of the door will press down on the wedge plate of doorstop alarm and set off the alarm Which will sound at 120db siren continuously.
▶5. The sensitivity of the vibration sensor can be adjusted from low to high as indicated in order to meet your needs.
▶6. When the siren starts to sound weak , it is time to change the 9V battery as described in step 2 .
▶7. Turn off the power switch when the doorstop alarm is not in use. The alarm only can be used as a doorstop to prevent the doorknob from hitting the wall if the hinged door is opened too roughly.

Please Notice:
When you use it for the first time, the smell of the bottom damping rubber may be relatively strong, please put it in a ventilated place for a while, this situation will be much better