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Old 08-22-12, 01:27 PM   #10
Xringer
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Location: Woburn, MA
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I'm just using this 120vac unit to monitor the temperature (in C) of my new water heater.

Then today, I saw this PID unit.. Smart Digital PID Temperature Control Controller Furnace Kiln Power AC 85V-260V | eBay



Comes with a sensor too! Seems like a compact unit.
Best part, does C & F !!
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