Jaycar Concealed Metal Door Frame Reed Switch – Flush-Mount Alarm Contact

You've got a door or window feeding your alarm, and the last thing you want is a bulky sensor hanging off the frame like a target. This reed switch drills into a recess and sits flush. Invisible from the outside. The magnet mounts in the moving part; the switch segment goes into the frame. Wire it straight into your existing system. Two versions available — one for timber frames, one for metal. Both run normally closed: contacts stay shut while the magnet is alongside the switch, which is your 'secure' state with the alarm armed. Door opens, circuit breaks, alarm trips. Simple

• Flush-mount design keeps both magnet and switch invisible once recessed
• Two variants: timber-frame version and metal-frame version
• Normally closed contact — circuit stays live while the door or window is secure
• Drills into a standard recess; no surface-mount hardware visible
• Wires directly into your existing alarm panel