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The Honeywell Home Intrusion 5899 is a four-pack of replacement magnets designed to work with the 5816 wireless door and window contact transmitter. The 5816 contact relies on a matched magnet to detect the open or closed state of a door or window. When the magnet moves away from the transmitter body, the zone trips and sends a signal to the control panel. These white magnets maintain the clean, low-profile appearance common to residential and light commercial intrusion installations. Security technicians install them as replacements when original magnets are lost, damaged, or needed for new door and window sensor deployments.
These magnets are used in residential and light commercial security systems wherever 5816 wireless contacts are installed. Typical applications include entry doors, interior doors, double-hung windows, sliding windows, and casement windows. The white finish blends with standard door and window trim. Having a four-pack on hand allows a technician to stock spares or outfit multiple openings in a single service call without returning to the supply house.
Designed for use with the Honeywell Home 5816 wireless door and window contact transmitter. Consult the 5816 product documentation to confirm fitment before installation.
Installation is typically performed by a licensed low-voltage or alarm systems technician. Before replacing a magnet on an active zone, place the security system in test mode or disarm the panel to avoid triggering false alarms. The magnet should be mounted on the moving door or window leaf, aligned with the reed switch location marked on the 5816 transmitter body. Follow local low-voltage wiring codes and the panel manufacturer guidelines for zone testing after any sensor hardware change.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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