5 pcs Door Contacts Grey Surface Mount NC Security Alarm Window Sensors. These Door Contact Position switches (DCS) Work with All Access Control and Burglar Alarm Systems

5 pcs Door Contacts Grey Surface Mount NC Security Alarm Window Sensors. 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...


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