making it a reliable choice for maintaining precise climate control in residential or light commercial split systems

multiple EFB120-S actuators can be wired in parallel

The HVAC auxiliary switch provides a secondary set of contacts that change state with the main poles

Built with a robust frame and designed for continuous duty in harsh mechanical environments

Laars Heating Systems RXD7198 Control Board 320734-701 making it a reliable choiceThe Laars Heating Systems RXD7198 Control Board is a critical OEM replacement part engineered for precise thermal management and system logic within high efficiency hydronic systems. Specifically designed for the Laars NeoTherm NTH150 210 series, this HVAC control board integrates advanced microprocessor logic to regulate combustion air flow, ignition sequences, and variable firing rates. For contractors performing boiler control board replacement,