sensorbutton

noun
UK /ˈsɛnsə ˈbʌtən/
US /ˈsɛnsər ˈbʌtən/

A button that feels your touch and turns something on.

Press the sensorbutton to open the door.


OTHER MEANINGS

2. A button that reacts to heat or light instead of being pushed.

The lamp has a sensorbutton that turns on when it gets dark.

3. A small pad on a device that senses a finger and sends a signal.

The toy robot wakes up when you tap its sensorbutton.

4. A control that starts a machine when it detects movement nearby.

Wave your hand over the sensorbutton to start the fan.