1. Before using the door alarm, please check if the battery is inside.
2. Stick the alarm on the door or window inside the room you want to protect.
3. Slide the switch to the ON position.
4. Do not touch the alarm for at least 30 seconds.
5. To check if it works, tap or Move the alarm in any way.
6. An alarm will make a sound of 90 dB.
7. To clear the alarm, slide the switch to the off position.
8. Size: 6.2 * 3.1 * 2 cm