The compact housing is built to withstand demanding mechanical room environments while maintaining General Close-Off ratings

Always verify ductwork sizing and check the drip loop on the wiring harness during installation

For industrial contractors

Integrated LED Indicator: Provides instant visual verification of power status directly at the right-angle connection point

For contractors maintaining Trane HVAC systems

Siemens Building Technology 544-577-40 Sensor 30067439-890 The compact housing is builtThe Siemens 544 577 40 is a heavy duty liquid immersion temperature sensor engineered for precision monitoring in HVAC hydronic systems. This unit features a high accuracy 1k Ohm Platinum RTD (Ref. 375a Alpha) sensing element, providing stable and linear resistance output across a broad operating range of 0F to 250F ( 18C to 121C). Designed for direct mounting into piping systems, it includes a 4 inch stainless steel probe and a matched thermowell to