on-off value
nounUK /ˌɒn ˈɒf ˈvæljuː/
US /ˌɑːn ˈɔːf ˈvæljuː/
A value that is either fully on or fully off, like a light switch.
The toy robot's eyes use an on-off value, so they are either lit or dark.
OTHER MEANINGS
2. A setting in a computer program that can only be true or false.
The game checks an on-off value to know if the sound is enabled.
3. A simple control that has just two positions, like a button that is pressed or not pressed.
The fan's speed is an on-off value: it is either spinning or stopped.
4. A measurement that records only two possible conditions, such as yes or no.
The door sensor sends an on-off value to show whether the door is open or closed.