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Humidistat SPDT 10-90%

Humidistat SPDT 10-90%
Product Code: 3-M-W42AA

For low or line voltage.
SPDT contact action provides control of humidifying or dehumidifying equipment.
Mounts on flat surface or on a standard 2" x 4" outlet box.
Dial lock feature. Range: 10% to 90% relative humidity.

The W42AA humidistat controls humidifying or dehumidifying equipment, or both.  The humidistat is a 3 wire device with single-pole, double-throw, snap-acting contacts.  The range is 10 to 90% relative humidity (RH).  The differential is nonadjustable, fixed at approximately 4% RH.  Maximum ambient temperature is 100oF (38oC).

A typical W42 application is for operating an exhaust fan in electrically heated homes.  The humidistat automatically operates the exhaust fan to reduce the relative humidity when it is above normal.

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