This specific model (BGA) does not include internal auxiliary switches

and the mounting hardware

industrial-grade composite materials designed to withstand the thermal expansion and contraction cycles typical in commercial heating units

With its adjustable superheat setting and 5-foot capillary tube

Built to withstand demanding chiller environments

Dwyer Instruments HWT250 Thermometer R-134A This specific model (BGA) doesThe Dwyer Instruments HWT250 is a heavy duty bi metal hot water thermometer engineered for precise thermal monitoring in hydronic heating systems, boiler loops, and outdoor wood furnaces. Featuring a 2 inch dial with high contrast dual scales in both Fahrenheit and Celsius, this instrument provides reliable temperature tracking across a 30 to 250 degree range. The zinc plated brass housing and glass lens offer the durability required for demanding