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

3pcs RC-35 NC Recessed Wired Security Sensor Alarm Magnetic Reed Switch White

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

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

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

2pcs RC33 NC Recessed Wire Door Contact Sensor Alarm Magnetic Reed Switch

10Pcs Recessed Wired Door Contact Sensor Alarm Magnetic Reed Switch RC-33 NC USA

3 Pcs RC-33 NO Recessed Wired Security Sensor Alarm Magnetic Reed Switch White