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

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

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

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

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

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

2 x RC-33 NC Recessed Wired Security Window Door Contact Sensors White