20 Pack White Wired Door/Window Security Alarm Contacts - Surface Mount Reed Switch By The Wires Zone

Wire up your whole house with security sensors using this 20-pack from The Wires Zone.

These are white, wired magnetic reed switches for doors and windows.

They're surface mount, meaning they just screw onto the surface of the door/window and frame.

Super easy to install.

Each sensor is brand new.

When the magnet separates from the switch, it triggers an alarm (if connected to a security system).

They're a standard part for any wired alarm system.

The model is DT-2021-WH-20.

With 20 in a pack, you can secure multiple doors and windows at once.

Great for DIY home security setups.

Reliable and simple.

Keep your home safe with these basic but essential sensors.

Good for new installs or replacing old ones.