AJMRTC 5 Pairs MC-38 Magnetic Contact Switch, Wired Door Window Reed Sensor, Normally Closed Magnetic Sensor for Home Security Alarm and Smart Automation

AJMRTC set contains 5 pairs of MC-38 wired magnetic door and window contact sensors. Each pair consists of a reed switch transmitter and a matching magnet. It adopts normally closed dry contact reed switch structure. When the magnet and sensor are close together, the circuit keeps conducting; once separated by opening doors or windows, the circuit breaks to send an alarm trigger signal. It is a passive sensor without power consumption, stable and reliable for long-time running. You can fix it on wooden doors, cabinets and windows either by screws or self-adhesive tape. Widely used for home anti-theft alarm systems, cabinet opening detection, smart home automation, and Arduino DIY security projects.

Specifications:

1. Model: MC-38
2. Contact Type: Normally Closed (NC)
3. Max Rated Voltage: 100V DC
4. Max Rated Current: 0.5A
5. Rated Power: 10W
6. Actuation Distance: 15mm - 25mm
7. Housing Material: ABS Plastic
8. Cable Length: About 28cm
9. Mounting: Screw / Double-sided Tape
10. Quantity: 5 Pairs
11. Operating Temperature: -20 ~ +60