DYNWAVE 50cm X 6063 Aluminium Alloy Al Si, 8mm
- 1 White ABS Normally Closed Miniature Door Contact Switch 5/8 by 3/8 with screw terminals to terminate alarm system wires.
- Will Sense Door Closer at Roughly 1/2” or 10mm.
- 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..