Binary Sensor
Binary sensors gather information about state of switches, contacts, pins, and alike. The return value of those sensors is usually digital (1/0). This means that those sensors knows only two states: 0/off/low/closed/false and 1/on/high/open/true.
Knowing that there are only two states allows Home Assistant to represent these sensors in a better way in the frontend according to their functionality.
The way these sensors are displayed in the frontend can be modified in the customize section. The following device classes are supported for binary sensors:
- None: Generic on/off. This is the default and doesn’t need to be set.
- cold:
On
means cold - connectivity:
On
means connection present,Off
means no connection - gas:
On
means gas detected - heat:
On
means hot - light: Lightness threshold
- moisture:
On
means wet - motion:
On
means motion detected - moving:
On
means moving,Off
means stopped - occupancy:
On
means occupied,Off
means not occupied - opening:
On
means open,Off
means closed - power: Power, over-current, etc.
- safety:
On
means unsafe,Off
means safe - smoke:
On
means smoke detected - sound:
On
means sound detected,Off
means no sound - vibration:
On
means vibration detected,Off
means no vibration
For analog sensors please check the component overview.