Seco-Larm SM-4201-LQ Track-Mount Overhead Door Magnetic Contact Switch, Rugged Aluminum Housing, 36" Wire Leads, for Closed Loop Circuits, 3" Gap, Weatherproof, Mounting Bracket Included

Choose from our selection of magnetically actuated switches, magnetic contact alarm switches, magnetic bases, and more. In stock and ready to ship.

Heavy Duty Wired Alarm Garage Door Magnetic Contacts Switch Sensor NC with Adjustable Bracket

This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a magnet. When the magnet is less than 13mm (0.5") away, the reed switch closes. They're often used to detect when a door or drawer is open, which is why they have mounting tabs and screws.

The 9530 balanced magnetic contact/door position switch is a surface-mount switch and magnet set. The RCI 9530 is configured as a SPDT switch with magnetic tamper. The end-of-line resistors may be used to allow a predetermined trickle of current to flow and permit operation from a supervised line at all times.

The 9540 recessed magnetic contact/door position switch is self-locking in steel and wood. It is available in black or white finish with a ¾” diameter recessed magnetic contact. The RCI 9540 switch is SPDT configured and features an open/closed loop type.

The S241 magnetic door switches are sensors used to monitor the open and closed status of a door. A magnet mounted into the door connects the S241 reed switches contacts when the door is closed, signalling room occupancy status.

Mouser offers inventory, pricing, & datasheets for Magnetic Contact Magnetic / Reed Switches.

Recessed Door Contacts NC Security Alarm Window Sensors with Magnetic Reed Switch. 3⁄4 Inch Door Contact Position Switches DCS Work with All Access Control and Burglar Alarm Systems White 5pcs