A relay board is a circuit board that allows control over electrical currents through switches on the dashboard. In a vehicle such as a refrigerated truck or trailer, proper functioning of this relay board is key to maintaining appropriate temperatures, and a lot of energy is required. Replacing the relay board when it becomes worn out is key to preventing spoilage and damage. TKX Transport Refrigeration offers a selection of affordable and reliable reconditioned relay boards.
pictured: Reconditioned Thermo King Smart Reefer 2