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Security Alarm Reed Switch - Double Throw

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