MC-38 Surface Mount Wired NC Door Sensor Alarm Magnetic Reed Switch White 2pack

Wired Surface Mounted NC Magnetic Door Window Contact Sensor Alarm Switch 5 Pack

10pair MC-38 Surface Mount Wired NC Door Sensor Alarm magnetic Reed Switch USAA

2pcs MC-38 Surface Mount Wired NC/NO Door Sensor Alarm Magnetic Reed Switch New

Wired Door Contact Sensor NO Surface Mount Magnetic Reed Switch Black

Wired Surface Mounted NC Magnetic Door Window Contact Sensor Alarm Switch 5 Pack

2pack MC-38 Surface Mount Wired NO Door Sensor Alarm Magnetic Reed Switch White

5 x Wired Door Contact Sensor SHOP NC Surface Mount Magnetic Reed Switch