The W42AA humidistat provides single pole, double-throw control for use on low or line voltage applications.
The humidistat’s terminals are marked for easy wiring. The “C” terminal is common.
The circuit between “C” and “L” terminals closes on a decrease in relative humidity. The circuit between “C” and “H” terminals closes on an increase in relative humidity.
• Three-wire SPDT switch permits control of humidifying or dehumidifying equipment or both with one control • Stable and accurate human hair sensing element • Easy to read dial is adjustable over a range of 10 to 90% RH
• Concealed dial lock screw for sealed setting G
The W43A Humidistat provides SPDT control for use on low or line voltage applications. It has a thermoplastic cover with Allen-head locking screw to discourage unauthorized tampering. The sensing element consists of carefully selected and processed human hair.
• Human Hair Sensing Element Provides stable, accurate measurement
• 1/4 hp (6A) Rated Contacts Permits direct operation of many fans in commercial applications • High/Low Adjustable Knob Range Stops Allows adjustments within a desired range