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Siemens
Siemens QFM81.2 : Duct Hygrostat with Exposed Setpoint Dial, SPDT
MSRP: $422.70Your Price: $160.63 -
Siemens
Siemens QFM81.21 : Duct Hygrostat with Covered Setpoint Dial, SPDT
MSRP: $522.44Your Price: $198.53
Hygrostats
Hygrostats are used for controlling and monitoring relative humidity in facilities under HVAC control. They ensure duct humidity control within the selectable range of 15 to 95% relative humidity. The hygrostats do this by controlling humidification or dehumidification equipment. Duct hygrostats can be used as minimum or maximum limiters in the supply air duct.