Weil McLain 383-500-125 Sensor As a genuine pneumatic control

As a genuine pneumatic control accessory

whereas the original number may have been used for bulk production line assemblies

effectively preventing "nuisance" cycling under unsafe conditions

this is a 120V heating element

this unit is the official superseding part for various older versions

Weil McLain 383-500-125 Sensor As a genuine pneumatic controlThe 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,