Wireless door alarms, set of 4 small magnetic bells for home, child, and garage security, self-assembly with 4 operating modes

Mini Alarm: Compact design, smaller than most door alarms. Easy self-installation: Simply peel off the protective film and stick it on. Easily attaches to any door or window. Loud 110 dB Alarm: In continuous alarm mode, the alarm effectively deters thieves and intruders once triggered. In doorbell mode, a loud tone warns your children or pets when they leave the house. 4 Operating Modes: General alarm, continuous alarm, door closing alarm, and doorbell mode. Simply select the desired mode using the on/off switch. Each mode has its own distinct tone. See product image for further details. Versatile Applications: Suitable for all types of doors and windows (e.g., hinged, roller, and sliding doors), as well as refrigerators, drawers, filing cabinets, safes, garages, RVs, offices, warehouses, shops, etc. Battery Level Indicator: Includes 3 LR44 batteries. Low power consumption and long standby time. A "beep beep" sounds every half hour when the battery is low. Mini alarm: Compact design, smaller than most door alarms. Easy self-installation: Simply peel off the protective film and stick it on. The alarm can be easily attached to all types of doors and windows. Loud 110 dB alarm: In continuous alarm mode, the alarm effectively deters thieves and intruders once triggered. In doorbell mode, a loud tone warns your children or pets when they leave the house. Four operating modes are available: general alarm, continuous alarm, door closing alarm, and doorbell mode. Simply select the desired mode using the on/off switch. Each mode has its own distinct tone. See product image for further details. Versatile applications: Suitable for all types of doors and windows (hinged, roller, and sliding doors), as well as refrigerators, drawers, filing cabinets, safes, garages, RVs, offices, warehouses, shops, etc. Advantages: Small and lightweight. High-quality ABS material. Loud 110 dB alarm; 4 operating modes; Easy self-installation by peel and stick; User-friendly; 3 LR44 batteries included; Battery level indicator. Product parameters: Alarm dimensions: 56 x 33 x 17 mm (2.2 x 1.3 x 0.7 in). Magnetic strip dimensions: 35 x 11 x 11 mm (1.4 x 0.4 x 0.4 in). Alarm power supply: 3 LR44 batteries (included). Package contents: 2/4/10 alarms. Installation instructions: 1) Apply double-sided adhesive tape to the back of the alarm and the magnetic strip and stick them separately to both sides of the door or window frame. 2) Ensure that the inverted V-shape of the two parts is aligned. Ensure the distance between them is less than 1 cm.

4 Operating Modes:

1) General Alarm: The alarm sounds when the door is opened; the alarm stops when the door is closed. Setting: Flip the switch up. The rapid tone is "Di-Di."

2) Continuous Alarm: Continuous alarm even when the door is closed. Setting: Flip the switch up, down, up. The signal tone is "Di..."

3) Door Closing Alarm: Sounds "Di..Di..Di." when the door is opened; the alarm stops as soon as the door is opened. Setting: Flip the switch up, down, up, down, up. The rapid tone is "Di-Di-Di."

4) Doorbell: Rings "DingDong" when the door is opened. Setting: Flip the switch up, down, up, down, up, down, up. The quick sound is "DingDong."