Siemens Building Technology QFM81.21 Duct Hygrostat W/Covered Setpoint Dial 30-90% RH

Siemens QFM81.21 is a duct mounted humidity controller that ensures the interior conditions are maintained to appropriate levels. Relative humidity precision measurement range is 30 to 90% RH and setpoint adjustment range is 15 to 95% RH. It integrates into supply, return or discharge air ducts, and guarantees accurate control. The main advantages are improved indoor air quality, growth of mold and mildew reduced, safeguarding delicate equipment, and maximum energy efficiency. The pharmaceutical, data center, healthcare, and commercial building industries use this hygrostat to provide hygienic and comfortable areas at lower operating cost.