this specific model is designed for 120V AC electrical demand signals from thermostats or controllers

The change is a manufacturer update to the SKU

providing the flexibility needed for sensitive level sensing without sacrificing the structural rigidity required for industrial HVACR environments

Compressor Protection: Integrated MOP 100 PSI charge prevents motor overload during high-suction pressure transients

Adjustable Timing Cycles: Independent settings for "on" and "off" cycles allow for precise control based on ambient humidity and system load

Hoffman Controls 860-4ASQ Controller Els PW 29614 this specific model is designedHoffman Controls 860 4ASQ 50 80F 4Stage Controller