These are used to secure an alarm circuit on a door or window. Sold as a pair, one has a magnet inside, the other a reed switch. They have powerful magnets, with self adhesive or screw mount, and screw terminal connections.
Reed Switch contacts: closed when both units are together (ie current flows), and open when apart.
Normally CLOSED (NC) 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 | 55.0 mm |
|---|---|
| Height | 12.5 mm |
| Depth | 13.0 mm |
| Dimension details | Dimensions identical on switch and magnet |
Packaged Dimensions
| Packaged Dimensions | 7.6cm(Length) x 3.8cm(Width) x 1.7cm(Height) |
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