on-off state
nounUK /ˌɒn ˈɒf steɪt/
US /ˌɑːn ˈɔːf steɪt/
A thing that is either fully on or fully off, with nothing in between.
The light switch has only two on-off states: up for on and down for off.
OTHER MEANINGS
2. A condition in which something changes suddenly between two opposite situations.
His mood was in an on-off state all day, happy one minute and grumpy the next.
3. A setting on a device that can only be turned on or turned off.
The fan's on-off state is controlled by the red button.
4. A simple way to describe something that has just two possible positions.
The game uses an on-off state to show whether a door is open or closed.