reversesensor
nounUK /rɪˈvɜːs ˈsɛnsə/
US /rɪˈvɜːrs ˈsɛnsər/
A small device on a car that beeps or shows a picture to help you back up safely.
The reverse sensor beeped loudly when I got too close to the wall.
OTHER MEANINGS
2. A sensor that detects motion or objects when a vehicle is moving backward.
The reverse sensor activated as soon as the car shifted into reverse.
3. A device that measures the direction of rotation in a machine.
The engineer checked the reverse sensor to confirm the motor was spinning the right way.
4. A component in robotics that senses backward movement.
The robot's reverse sensor stopped it from bumping into the table.