1 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
- 1 Brown ABS Surface Mount Normally Closed Door Contact Switch.
- Will make Sense Door Closer at Roughly ¾” or 15mm.
- This Contact Works with Any Access Control or Burglar Alarm System Available.
- NORMALLY CLOSED: When the door or window is open, the contact will give an open signal and when the door is closed the contact will give a closed (circuit) signal..