By monitoring discharge air or internal cabinet temperatures

Rugged Construction: Built to withstand the harsh environment of commercial air handlers

Enhanced Diagnostics: The transparent window allows for real-time flow observation to identify circulation problems or undercharged systems

This OEM furnace safety switch features a Single Pole Single Throw (SPST) configuration with an automatic reset function

While the electrical specifications are the primary concern

Weil McLain 383-500-125 Sensor By monitoring discharge air orThe Weil McLain 383 500 125 Outdoor Temp Sensor is a critical OEM component designed to provide real time ambient temperature data to the Weil McLain Ultra Gas Boiler control module. By utilizing a 12k ohm thermistor encapsulated in a weather resistant housing, this outdoor reset sensor allows the boiler to dynamically adjust its firing rate and supply water temperature based on external conditions. This process, known as outdoor reset logic,