3 x RC-35 NC Recessed Wire Gate Contact Sensor Alarm Magnetic Reed Switch White

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

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

Recessed Security Alarm Contacts Door Window Sensor Magnetic Reed Switch

5pcs RC-33 NC Recessed Wired Security Contact Sensor Alarm Magnetic Reed Switch

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

5pcs NC Recessed Wired Security Contact Sensor Alarm RC-35 Magnetic Reed Switch

2pcs RC36 NC Recessed Wire Door Contact Sensor Alarm Magnetic Reed Switch White