Standard Tumble Dryer. A standard domestic tumble dryer recommended by many fabric specifiers, 120 minute timer, 5kg load, reversing action, 2 heat settings and 10 minute cooling time. Precision Tumble Dryer with Digital Controller. A standard domestic tumble dryer shich has been modified with the addition of an accurate electronic controller to control exhaust temperature to ± 2° C and cycle time within one second. Capacity 5kg, reversing action, 10 minute cooling time.