Magnetic Reed Switch, 4 Pack NC Ring Alarm Contact Sensor Switch, Brown

Magnetic Reed Switch, 3 Sets NC NO Magnetic Contact Switch for Door Window

Magnetic Reed Switch, 1 Set NO NC Wired Door Window Contact Switch

Gebildet 10pcs Plastic Reed Switch Contact,Magnet Near - Break Black

Magnetic Reed Switch, 2 Pack NC NO Wired Magnetic Contact Switch, Black

Door Window Contact Sensor (NC) Magnetic Reed Switch Rolling Door Contact Alarm

4 Pack Magnetic Reed Switch NC Ring Alarm Contact Sensor Switch Brown

Magnetic Reed Switch, 1 Set NO Wired Door Window Contact Switch for Home