You have both types of contacts on the one unit, so you will always have the correct one!
Normally Open (N.O.) and Normally Closed (N.C.) per pair.
Contact operation:
Contacts are closed cicuit when the magnet is alongside the switch. For alarm installation this is denoted as the "normal" state as the door/window is secure and the alarm is armed.
Product Dimensions
Width |
55mm |
Height |
12.5mm |
Depth |
13mm |
Dimension details |
Dimensions identical on switch and magnet |
Operating Temperature
Operating Temperature |
-40°C |
Product Mounting
Overall Screw Spacing (H) |
44.5mm |
Mounting Method |
Surface |
Attachment / Securing Method |
Screw Down,Self Adhesive Tape/Pad |