Durable & portable units Digital metering with LED Display Branch circuit fuse protection on all 3 phases of load steps Air pressure switch to prevent load from being applied if loss of cooling air is detected Blower Motor Circuit is protected by current overload protection Over-temperature sensor automatically removes load if an over-temperature condition is detected Easy-to-use switches and controls for fan, load steps and master load Low-noise & high velocity cooling system Rugged construction metal frame Durable powder coat finish Lifting handles Rugged construction metal frame Stainless steel exterior fasteners 2-year warranty