... fail,over hot,etc. 8).Digital auto-control,it has the function of manual,automatic and heating- ... frequency ,the power can infinitely variable control. 10).Special cycle cooling system,make sure ... machine work continuously.2.Feature:1)digital auto-control, it has the function of manual, semi=auto,full ... volume, light weight, easy to remove,it has no high voltage, make operation more safety.3.Application ...