Normally Closed 12V Magnetic Reed Switch Door Sensor For Home Alarm Security System Pack Of 2 64x13x13mm Durable Magnetic Contacts For Doors And Windows No Fuss Easy Install Reliable NC Sensor

Handy 12V NC Reed Door Sensor Kit, Pack of 2
✔️ 2 x NC reed switches, 12V DC, 64x13x13 mm (2.52x0.51x0.51 in) with screws

Normally Closed magnetic reed door sensor designed for home security systems. It mounts with screws on doors and windows, triggering an alarm panel when the magnet is separated.

✅ Contact type: NC reed switch (magnetically operated)
✅ Size: 64x13x13 mm (2.52x0.51x0.51 in)
✅ Voltage/current rating: DC 12V-100V, 0.5A max, 10W
✅ Detection distance: 10-20 mm
✅ Package: 2 switches + 8 screws

💡 What is a door contact sensor used for in a home security setup? A handy mechanism to detect door and window openings and alert the system.
- Real-time status signals to the alarm panel
- Easy retrofitting on wooden doors and windows
- Works with existing wired alarms to trigger events
- Affordable upgrade for basic security