Before starting the pairing process, ensure the following:
Shelly BLU Gateway Gen3 is running firmware version 1.7.4 or later.
Shelly BLU H&T ZB / BLU H&T Display ZB and Shelly BLU Door/Window are updated to the latest firmware version.
You can update BLU devices using the Shelly BLE Debug application.
Have the sensor close to the Shelly BLU Gateway Gen3 during pairing.
Access the Shelly Gateway Gen3 via its IP address to open the local web interface.
Navigate to the BLU TRV settings.
Click Add sensor.
Put the BLU H&T device into pairing mode according to the instructions in its user manual.
When the device enters pairing mode, refresh the web interface page if needed. The sensor should appear in the list of Attached sensors.

7. After successful pairing:
Go to BLU TRV → Settings.
Enable Underfloor heating.
This ensures that the external temperature data from the BLU H&T sensor is prioritized.
Pairing Shelly BLU Door/Window
The procedure is the same:
Place the device near the Shelly BLU Gateway Gen3.
In the BLU TRV settings, click Add sensor.
Put the Shelly BLU Door/Window into pairing mode as described in its manual.
Refresh the page if necessary and select the discovered device to complete pairing.
5.Once paired:
The Open/Closed window automation is applied automatically.
You can adjust the following settings in the BLU TRV configuration:
Open window target temperature
Door/window override delay