Hello. I use this sensor in order to convert pressure from hPa to mmHg:
- platform: template
sensors:
pressure_cal:
value_template: '{{ "%.1f" | format(states("sensor.0x00158d000349c2f8_pressure") | float * 0.75006375541921) }}'
unit_of_measurement: mmHg
The data of 0x00158d000349c2f8_pressure sensor is provided by zigbee2mqtt. But when the zigbee2mqtt is restarting, the sensor 0x00158d000349c2f8_pressure have the undefined state. At the same time pressure_cal sensor obtains value 0.
So the pressure_cal plot looks like this:
Is it possible to tell HA not to change value of pressure_cal to zero if the 0x00158d000349c2f8_pressure state equals “undefined”?
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