Key Benefits Precise Thermal Calibration: Factory-set to trip at 175°F and reset at 135°F for consistent safety performance

this Weil McLain 511-330-085 is the processing module itself

providing tight ±3% RH tolerances for precise climate regulation

the Fasco A184 draft inducer provides a drop-in fit with a precision-balanced wheel to minimize vibration and noise

Resideo AT150B1237 Transformer 320735-701 Key Benefits Precise Thermal Calibration:The Resideo AT150B1237 Transformer is a heavy duty 50VA step down transformer designed for reliable power distribution in commercial and residential HVACR control systems. Engineered for versatility, this multi tap transformer supports 120V, 208V, and 240V primary inputs, providing a consistent 27V secondary output. This wide input range makes it an essential stock item for technicians servicing various line voltage environments. As the direct