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

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

Door Window NO/NC Recessed Security Contact Sensor Alarm Magnetic Reed Switch

MC-31 Wired NC Magnetic Door Window Contact Sensor Alarm Reed Switch, 5 Pack

3x Magnetic Reed Switch Normally Open or Closed NC NO Door Alarm Window Security

10 Sets Pack of Wired Surface Mounted Alarm Magnetic Contacts Door Window Reed S

Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switc...

Wired Surface-Mounted NC Magnetic Door Window Contact Sensor Alarm Reed Switch