magneticsensor
nounUK /mæɡˈnetɪk ˈsensə/
US /mæɡˈnetɪk ˈsensər/
A magnetic sensor is a small tool that can tell when a magnet or metal thing is near.
The robot used a magnetic sensor to find the metal ball under the table.
RELATED WORDS
OTHER MEANINGS
2. A device in a phone that senses magnetic fields to help with navigation.
The magnetic sensor in my phone helps the map know which way I am facing.
3. A part in a car that detects the position of a spinning wheel.
The mechanic replaced the magnetic sensor so the car's speedometer worked again.
4. A security tool that notices when a door with a magnet opens.
When the magnetic sensor on the window was triggered, the alarm rang.