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I think I've got this up and running OK although I can't test it yet. All the temperature readings show up and the relay gets triggered as it should. One thing I wasn't sure about was that all the values in the control algorithm screen are zero and all the values in advance settings are blank...

I discounted the option that I might have wired them the wrong way round as they both work when connected to the raspberry pi in that configuration. I actually purchased an extra temp sensor in case one of them didn't work but somehow dx managed to send me a disposable razor instead!

Thanks for the tips. I tested with each temp sensor individually. One worked fine, the other was initially identified, but with a null value. After resetting to default and power cycle it no longer found it. So it looks like there's something it doesn't like about one of the sensors. Not sure if...

I'm fairly new to all of this but having a lot of fun attempting to get it working. I have though hit a bit of a wall in terms of getting more than one sensor to be recognised. I've tried the "reset controller to factory defaults" but still when I refresh device list it only shows one temp...