5 pcs Brown Door Contacts Surface Mount NC Security Alarm Window Sensors With Magnetic Reed Switch. These ¾” Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems bee 3/4" Stainless steel brushes: 1/4"

3/4" Stainless steel brushes: 1/4"

Metal stable and durable clamp can clip on something

Suitable for a variety of MCU boards

Maximize the space in your bathroom or vanity drawers

5 pcs Brown Door Contacts Surface Mount NC Security Alarm Window Sensors With Magnetic Reed Switch. These ¾” Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems bee 3/4" Stainless steel brushes: 1/4"5 pcs Brown Door Contacts Surface Mount NC Security Alarm Window Sensors With Magnetic Reed Switch. These Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems These are the door contact sensors that are in use with any and all commercial or residential card access systems as well as all security burglar alarm system. The door position switches operate with a built an internal magnetic reed switch that closes when