Maintenance-Free Operation: Equipped with a brushless motor to ensure long-term proportional actuator reliability without calibration drift

Always verify the part number on your existing board's schematic before installation to ensure exact pinout compatibility

fitting both Resideo/Honeywell and several Aprilaire whole-house bypass models

Key Benefits OEM Precision: Guaranteed compatibility with Lennox equipment

Always ohm out the probe to verify resistance against the manufacturer’s chart

Dwyer Instruments SFI-100-1/2 Indicator Els PW 29614 Maintenance-Free Operation: Equipped with aThe Dwyer Instruments SFI 100 1 2 is a field proven midwest sight flow indicator designed for immediate visual verification of fluid movement. Integrated with a 1 2" NPT female connection, this unit features a single window design with a high visibility rotating impeller that provides clear confirmation of flow rates in both liquid and gas applications. Constructed with a heavy duty bronze body and a tempered glass window, it is built to withstand the