For the creation of an automation I want to create a trigger (When) that will become active/true when the temperature of the sensor outside is higher than the temperature of the sensor inside. The following code doesn’t seems to work:
{{states.sensor.netatmo_weather_station_outdoor_temperature > states.sensor.netatmo_weather_station_indoor_temperature}}
What is wrong with this Value template code?
You’re not comparing the state of the entity, you’re comparing the state objects. Take a look at the templating documentation for more info on the states object and states() method. Also make sure you are comparing numbers not strings.
Thanks for pointing me in the right direction. Got it working now:
{{states('sensor.netatmo_weather_station_outdoor_temperature') > states('sensor.netatmo_weather_station_indoor_temperature')}}
That’s still not right: you’re comparing strings rather than numbers (see Petro’s last sentence). Sensor states are always strings and need converting before you can do comparisons or arithmetic.
When it’s 15°C inside and 8°C outside, your template will return true because “8” is greater than “15”.
You want:
{{ states('sensor.netatmo_weather_station_outdoor_temperature')|float(0) >
states('sensor.netatmo_weather_station_indoor_temperature')|float(0) }}
The 0 in float(0) is the default value returned if the sensor state can’t be converted to a number — if it is unavailable, for example.
@Troon thank you for this additional explanation. I will adjust my automation!