door sensors

Opening detection devices

Door sensors are devices that detect when a door opens or closes, typically using magnetic contact between two components—one on the door frame, one on the door itself.

They're fundamental to home security systems, triggering alarms or notifications when entry points are breached.

Door sensors also appear in commercial settings to track foot traffic or automate climate control: The door sensor chimed when customers entered.

Opposites
detection trigger type

door sensorsmotion detectors

Devices sensing physical activity

motion sensors · pressure sensors · heat sensors · temperature sensors

detection method

door sensorsheat sensors

Devices measuring temperature changes

infrared sensors · light sensors · pressure sensors · proximity sensors

Family

door, doors, doored, doorway, doorways, doorman, doormen, doorstep, doorsteps

Familiarity
Top 200,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Everyday, not technical · Rated G