Door and window sensors for home entry protection

Sensors for doors and windows form the first line of defence against unauthorised entry. They are straightforward devices that trigger alarms when contacts separate or when glass is disturbed, and they integrate well into broader security systems.

What to look for

Choose between wired and wireless contact sensors based on installation ease and reliability needs. Wireless sensors offer flexible placement and simpler installation, while wired sensors provide continuous power with less maintenance. Magnetic reed switches are common, while recessed sensors offer a discreet appearance for aesthetics and tamper resistance.

Practical considerations and tips

• Gap tolerance: Check manufacturer gap specifications for accurate triggers.
• Mounting style: Surface-mounted versus recessed depends on door/window construction.
• Battery life: For wireless models, monitor battery status and replace on schedule.
• Compatibility: Confirm the sensor works with your alarm panel or hub.
• Environmental resilience: Use weatherproof sensors for external doors.

Clearance sales and certified refurbished options can lower upfront costs, but always verify function and return policies. Properly combined with motion detectors and cameras, door and window sensors create an effective layered security approach that helps detect intrusion quickly and reduce potential damage.