Extend ZHA thermostat local temperature calibration range for Sonoff TRVZB

[TheNoim]

Breaking change

This should not break anything. The PR just increases the range and nothing else changes for the entity.

Proposed change

This PR extends the range of local_temperature_calibration from -2.5 °C - +2.5 °C degrees to -7 °C - +7 °C. The temperature sensor can be way more off than 2.5 degrees. For example, currently my temperature sensor of my TRVZB is 4.6 degrees off. This makes the calibration slider not usable at the moment.

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes #
• This PR is related to issue:
• Link to documentation pull request:

Values are taken from https://github.com/Koenkk/zigbee-herdsman-converters/blob/master/src/devices/sonoff.ts#L540

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[home-assistant]

Hey there @dmulcahey, @Adminiuga, @puddly, @TheJulianJES, mind taking a look at this pull request as it has been labeled with an integration (zha) you are listed as a code owner for? Thanks!

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Stale

[TheJulianJES]

Thanks for the PR!
According to ZCL page 429 / "Page 6-17", it seems like the value can only have a value ranging from -25 to 25 (where 25 would mean 2.5°C). That corresponds to the current limits.

Were you able to successfully set this to a higher value on your Sonoff TRV using the clusters menu?
(device page -> three dots -> Manage Zigbee device -> clusters -> Thermostat cluster -> local_temperature_calibration -> write value in upper text field, always leave lower one empty -> press write)

If the Sonoff one supports a higher range, we should probably just change the limits for the Sonoff TRV.
(Z2M seems to support -7°C to 7°C for the Sonoff TRV btw)

[TheNoim]

Thanks for the PR! According to ZCL page 429 / "Page 6-17", it seems like the value can only have a value ranging from -25 to 25 (where 25 would mean 2.5°C). That corresponds to the current limits.

Were you able to successfully set this to a higher value on your Sonoff TRV using the clusters menu? (device page -> three dots -> Manage Zigbee device -> clusters -> Thermostat cluster -> local_temperature_calibration -> write value in upper text field, always leave lower one empty -> press write)

If the Sonoff one supports a higher range, we should probably just change the limits for the Sonoff TRV. (Z2M seems to support -7°C to 7°C for the Sonoff TRV btw)

@TheJulianJES You are probably right. I changed the PR to only change the values for the TRVZB (I hope this is correct how I did this :/). I also tested the changes on my production home assistant instance and they work (For this I backported the changes for my current home assistant version https://github.com/TheNoim/homeassistant-core/tree/zha_thermostat_local_temp_calibration_range_extension_local).

Edit: I also changed the _attr_native_step value to 0.2 like Z2M https://github.com/Koenkk/zigbee-herdsman-converters/blob/master/src/devices/sonoff.ts#L540