Shelly BLE Debug App: no button to set the timezone offset for the BLU H&T device (without display)

Hello Gerd,

As far as I know, the Shelly BLU H&T (without display) doesn't have an internal clock.

The 'UTC Offset' button you saw in other posts only appears for the Display version of the device, because that model needs to show the local time on its screen.

Since your device has no display, it simply sends 'raw' sensor data (temperature/humidity) without a timestamp. The correct time is added later by your Gateway (e.g., a Shelly Plus or Pro device) when it receives the Bluetooth signal.

So, don't worry: your app isn't missing a feature; the button is just not included because your specific model doesn't need it.

Best regards

Zitat von AmiVanFan

As far as I know, the Shelly BLU H&T (without display) doesn't have an internal clock.

I also do think there is no "time" at all with Shelly BLU H&T-Devices

Thank you for the screenshots! Now I see the problem. In your first image, the app shows a note at the bottom: 'Lokale Zeitzone dieses Sensors: Europe/Berlin 16:15 (-1h aus...)'.

Even though the BLU H&T doesn't have its own clock hardware, the Shelly Smart Control App/Cloud assigns a location and timezone to every single device in your list. It seems that for this specific sensor, the timezone or the Daylight Saving Time (DST) offset is set incorrectly in the cloud settings.

To fix this, please try the following in the Shelly Smart Control App (not the Debug App):

1. Open the settings for your BLU H&T - 02 - Kühlbox.
2. Go to Settings -> Location and Timezone.
3. Check if 'Automatic Timezone' is enabled. If it is, try to disable it and set it manually to 'Europe/Berlin' to see if the offset changes.
4. Also, ensure the 'Latitude' and 'Longitude' are correctly set for this device (usually by clicking 'Detect' via your smartphone's GPS).

The app uses these specific device settings to render the diagram timeline, which explains why it differs from your Gateway's time.

Best regards