✔️No installation required, so you can use it right away (please prepare 2 AAA batteries)

✔️ Detects when a window or door is opened and sounds a loud alarm!

・To repel suspicious people.

・As a security item.

・Can also be used as a siren to detect wandering elderly people.

- For crime prevention when you're out or at night.

Also recommended for long-term absences.

- For doors and windows at home, garages, warehouses, barns, etc.

✔️There is a switch on the main unit so you can turn it off when not in use.