Olympia TF 400 Door/Window Contact Set

This Olympia TF 400 door/window contact set provides an effective and easy-to-use security solution for your home. It features a loud alarm that can be activated upon opening a window or door. The set includes 2 door/window contact units with built-in magnets. They are designed to be compact and easy to install. The package also includes 12 LR44 batteries. This set is a great way to add an extra layer of security to your home. Simply install the units on your windows and doors and they will immediately start protecting your home.