Uxcell Wired Door Window Contact Sensor – NC Surface Mount Magnetic Reed Switch, 3 Pack, Black, For Alarm Systems

About This Product

If you're setting up a security system for your home, garage, or shop, these magnetic door sensors are exactly what you need.
They're simple, reliable, and get the job done.

Each pack comes with three wired sensors that work on a Normally Closed (NC) circuit—meaning when the magnet's together, the circuit's closed and the light's on; when they separate, it trips and the light goes off.
Perfect for windows, doors, or any entry point.

These little guys are built tough with a durable PVC housing that resists rust, so they'll hold up in garages or industrial spaces.
The max sensing distance is about 10mm, and the cable length is 11.
8 inches, giving you some flexibility for installation.
Mounting holes are spaced 15mm apart, with a hole size of 8x4mm—easy to screw in.

Electrical specs: 0.

5A max current, 100V max voltage, and 10W power rating.

They work great with most standard alarm panels.

Whether you're protecting a warehouse, a retail shop, or just your front door, these sensors are a solid, budget-friendly choice.

Just make sure you grab the NC version if that's what your system needs.