If 120V or 240V power is present

For applications requiring a 2-10V DC or 4-20 mA signal

Durable Construction: Manufactured from high-strength cast iron for superior longevity and resistance to wear in harsh environments

Low Maintenance: Features corrosion-resistant stainless steel internals for extended service life without frequent intervention

which utilizes a three-wire incremental (floating) control signal at 24Vac

Heatcraft Refrigeration 28910103 Control Board 320735-701 If 120V or 240V powerThe Heatcraft Refrigeration 28910103 Control Board is a critical replacement component for Beacon II refrigeration systems, engineered to handle precise evaporator management in commercial walk in coolers and freezers. As a veteran grade OEM replacement part, this Beacon II controller integrates advanced microcomputer logic to regulate electric expansion valves (EEV), compressor cycling, and specialty defrost schedules. By replacing the Heatcraft