1Pcs Normally Open Proximity Magnetic Sensor / Reed Switch For Smart Home

2Sets Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security

4PCS Magnetic Reed Switch Normally Open Closed NC NO Door Alarm Window Security

Wired Reed Switch Magnetic Sensor for Garage Door Security and Alarm System Use

Garage Door Magnetic Reed Switch Sensor for Industrial Warehouse Security

Rolling Door Magnetic Reed Switch Sensor for Garage and Factory Door Security

Easy Install Garage Door Reed Switch Sensor for Normally Open Normally Closed

5 Pairs MC-38 Magnetic Door Switch Window Magnetic Switch Home Alarm Sensor