I have 4 Red Lion temp controllers. AKA PID controllers. These require only a supply, Solid State Relay and heating element and are very stable. These are a commercial controller and sale anywhere from $150 - $200. These are new and never used. I'm selling for $100 obo shipped to you. I will even assist with wiring instructions if you need them.
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6/30/15 at 4:46pm