These room humidistats are designed to control humidification or dehumidification equipment. It provides SPDT control. The sensing element consists of carefully selected and processed human hair, proven to be the most sensitive and stable material known for this application. Under normal conditions these controls retain their sensitivity and accuracy for many years. RM H-STAT, SPDT LINE VOLT6A 120V, 0/70% RH, UNIV.KNOB ADJ,(S
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