Siemens Building Technology QFM81.21 Hygrostat 320819-301 High Horsepower Rating: Gripnotch technology

High Horsepower Rating: Gripnotch technology provides up to 30% more power capacity than standard wrapped belts

0 Maintenance Kit is essential for performing comprehensive waterside and fireside inspections

85 inches (21

Optimized Performance: Delivers a consistent 950 RPM for stable airflow and system balance

Smith 100274106 Flame Rod Assembly

Siemens Building Technology QFM81.21 Hygrostat 320819-301 High Horsepower Rating: Gripnotch technologyThe Siemens Building Technology QFM81. 21 is a commercial grade duct hygrostat designed for precision relative humidity control in HVAC systems. Engineered for both monitoring and regulation, this device features a stabilized sensing strip that ensures superior linearity and long term stability, even in high humidity environments or air contaminated with dust. Unlike baseline models, the QFM81. 21 utilizes an internal setpoint adjuster to prevent