Security Alarm Reed Switch
4x
$1.47
6x
$0.98
4x
$1.47
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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.
| Width | 55mm |
| Height | 12.5mm |
| Depth | 13mm |
| Dimension details | Dimensions identical on switch and magnet |
| Mounting Method | Surface |
| Attachment / Securing Method | Screw Down,Self Adhesive Tape/Pad |
| Overall Screw Spacing (H) | 44.5mm |