Durable Construction: Heavy-duty galvanized steel provides long-term resistance to moisture and debris

The unit produces a robust open circuit voltage range of 20 to 28 mV

restricted airflow

38 NPS (National Pipe Straight) male thread

specifically models FE130 through FE400

Resideo AT140A1018 Transformer Durable Construction: Heavy-duty galvanized steelThe Resideo AT140A1018 Transformer is a heavy duty 40VA power solution designed for high demand 24Vac circuits in residential and commercial HVAC systems. This multi tap HVAC transformer features flexible primary voltage inputs of 120V, 208V, and 240V, converting power to a stable 27V secondary output. Engineered for versatility, it supports foot mounting, plate mounting on 2"x4" or 4"x4" outlet boxes, and clamp mounting via knockouts. As a Class 2