Evohome showing different temperature to DT92A

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  • jweaver
    Automated Home Ninja

    • Jan 2023
    • 447

    Evohome showing different temperature to DT92A

    Sorry.. My 2nd question today.

    I just added my 3rd DT92A and because of other issues I am having, I paying more attention than I would normally.

    Should the temperature on the DT92 and Evohome be exactly the same?

    I keep noticing that its sometimes a little different.. For example right now, the DT92A shows 21.5, but Evohome shows 22.

    I "proved" that Evohome was using the DT92 as its temperature source by putting it outside, where the temperature slowly dropped..

    But now its back in and in "normal" use, I am seeing these discrepancies.

    Is this normal/expected?
    Last edited by jweaver; 19 January 2026, 06:00 PM.
  • bruce_miranda
    Automated Home Legend

    • Jul 2014
    • 2639

    #2
    I think I have noticed this too. Various devices appear to round up differently.

    Comment

    • bruce_miranda
      Automated Home Legend

      • Jul 2014
      • 2639

      #3
      If you have an RF receiver like the HGI80 or ones of Pete's clones, you should be able to see the wall sensor is actually transmitting vs what it is displaying vs what Evohome is displaying.

      Comment

      • jweaver
        Automated Home Ninja

        • Jan 2023
        • 447

        #4
        I assumed it was a rounding thing, but just wanted to check. Always tempted to play around with an HGI80, but never found one.. Didn't know about the Clone.. Who is Pete? Can you share some details...

        Comment

        • bruce_miranda
          Automated Home Legend

          • Jul 2014
          • 2639

          #5
          ESP32-S3 + 868MHz CC1101 USB stick Complete with case and choice of antenna. Pre-installed with latest version of ramses_esp firmware. Use the RAMSES-ESP to capture RAMSES-II messages from your HVAC system. Host interfaces include USB serial interface and MQTT over WiFi.

          Comment

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