Product review (5 stars): The unit has a number of copper/stainless contacts inside which become dirty from carbon deposits and eventually the small stain
I bought one of these timers a while back for my 25 year old gas dryer. It worked then and I expect this new one to also work this time around. The unit has a number of copper/stainless contacts inside which become dirty from carbon deposits and eventually the small stainless contact falls off of the copper arms due to expected arcing over time.