BHT-006 thermostat rounds target_temperature (21.5 → 21)

Devices
1

Hi,

I’m using a BHT-006 thermostat (Tuya-based Zigbee) with Homey Pro (2023).

The thermostat itself supports 0.5°C increments (e.g. 21.5°C), and this works correctly on the physical device.

However in Homey:

- Setting the temperature to 21.5°C results in 21.0°C

- Reading target_temperature always returns an integer (e.g. 21 instead of 21.5)

- measure_temperature does report decimals correctly (e.g. 21.5)

It looks like target_temperature is being rounded down (floor), possibly due to parseInt / Math.floor in the driver.

This causes issues in automation (e.g. heating control with hysteresis), since the actual setpoint is higher than what Homey reports.

Question:

Is this a limitation of the Tuya/Zigbee mapping, or a bug in the Homey driver?

If this can be fixed, it would be great if target_temperature supports decimals (0.5°C steps), consistent with the device itself.

Device: BHT-006 (Tuya Zigbee thermostat)

Homey: Homey Pro 2023

Happy to help test a fix if needed.

Regards, Bart

2

You’d ask the app developer, in the related app topic (mentioned on the app page @ homey.app

Target temperature capabilities are (and should be) usually capable of 0.5°C steps.

Alternative:
When you don’t mind installing a beta firmware,
try to pair it as generic zigbee device (without app), because support for thermostats is recently added in beta firmware v13.1.0-rc.x

Screenshot_20260325_235544_Ecosia
Screenshot_20260325_235544_Ecosia1080×1073 175 KB

Otherwise you’d wait for the live firmware version to be published (usually in a few weeks).

3

Which app do you use? If you use the Tuya Zigbee app, you likely won’t get the issue resolved since the developer is no longer active.

You can also use a Tuya ZigBee/MultiMode gateway and use the official Tuya app to add your thermostat

4

There’s a “twin” app, in case you didn’t know
It’s still heavily in (AI) development, not findable as stable version @ app store, but the dev seems pretty active:
https://homey.app/a/com.dlnraja.tuya.zigbee/test/