New 10 x RC-33 NC Recessed Door Contact Sensor Alarm Magnet Reed Switch

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10X N.C. Recessed Wired Security Contact Sensor Alarm Magnetic Reed Switch

New 10 x RC-33 NC Recessed Door Contact Sensor Alarm Magnet Reed Switch

5 x Wired Door Contact Sensor NO Surface Mount Magnetic Reed Switch Brown

10pcs RC-36 N.C. Recessed Magnetic Wired Door Contact Sensor Alarm Reed Switch

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

3pcs RC33 NO Recessed Wire Door Contact Sensor Alarm Magnetic Reed Switch White