Super Max 12820 ASTPrice excludes freight. View This Video Discover Daimer's Absolutely Outstanding Wet Steam Degreasing Capabilities The Super Max 12820 AST highly powerful, industrial electric pressure washer features Daimer's exclusive AST (Automatic Shutoff Technology ). This elite, world's only technology greatly reduces the wear on the pump and other components and adds to longevity of the 12820 AST. As a rugged tri mode pressure washer, the 12820 AST can be used