ciciglow Magnetic Door Switch,10pcs Wired Door Window Sensor Magnetic Switch Magnetic Window Alarm Sensor Magnetic Reed Switch for Home Alarm System
- [Direction for Use] -- Magnets are usually close to each other, which is normal..
- [Working Principle] -- Close = short circuit = create a path for the current..
- [Switch Off] -- The magnets are close together and the switch is off..
- [Switch Open] -- And the switch and magnet are separated, and the switch is open..
- [Own Power Supply] -- No external power supply is needed, and the GND and N.C ports of wired or wireless alarm control panel are directly connected..