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XH-M452 thermostat humistat:




I found this inexpensive combination thermostat / humistat on Amazon. Judging by the sales, it looks like lots
of people are using it. It features dual set points for both temp and humidity, so you can control when the
relay turns on and off at separate points, to prevent rapid on/off cycling.



XH-M452 ($15 at Amazon)


settings cheat sheet:


XH-M452:



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