Wired Door Window Contact Sensor Two Pack Micro Normally Open Reed Switch For Alarm Systems Magnetic Reed Switch 10W 100V 0.5A Easy Install Plug And Play Compatible With DC 5V 12V 24V Lighting Sensing Range 16 To 23 mm Compact 23 By 14 By 6 Mm

Two-Pack Wired Door Window Sensor with Reed Switch
✔️ Two-pack, normally open reed switch, 16-23 mm sensing gap

This compact, plug-and-play wired door/window contact sensor uses a micro normally open reed switch to reliably detect when doors or windows separate from their magnets, triggering alarms in security systems and low-voltage lighting projects. Ideal for homes, offices, and small storefronts seeking simple, fast installation.

✅ Contact Type: Normally Open
✅ Rated Power: 10W
✅ Max Voltage: 100V, Max Current: 0.5A
✅ Size: 23 x 14 x 6 mm; Mounting Hole: 3 mm
✅ Transmission Distance: 16-23 mm
✅ Accessories: 4 pieces double-sided tape and 8 screws
✅ Color: Black; Pack: Two Pack

💡 What is a door window contact sensor and how does it work?

These handy devices help monitor entry points for security systems.

- They use a reed switch that closes when the magnet is near
- Works with low-voltage alarm gear and supports plug-and-play installation
- Ideal for securing doors and windows in homes or small offices