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  1. R

    Specific PID TD4 controller help.

    I got 23VDC from the PID SSR terminals. I tested the relay with a 9V battery, and it activated. So I tried reversing the polarity with the PID SSR terminals, and it has started working. Now I can only say this is odd and must mean the official diagram is wrong, or there is an error in production...
  2. R

    Specific PID TD4 controller help.

    It's the TD4-SNR
  3. R

    Specific PID TD4 controller help.

    Hi To be honest, this isn't for home brewing but you guys have the widest practical experience of using these in the domestic setting it seems, and I'd really appreciate your advice. I am using a PID controller TD4 to create a tool that heats pieces of steel, from antique clocks, and blues...
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