Product review (3 stars): Works but has issues
This machine does have a safety shut off if overheats.  It overheats because it's difficult to estimate the time it takes to dry a load.  It can take over two hours depending on size of load and type of fabrics.  I never run this when I'm gone.  The only way it shuts off is by turning knob back to zero.  Seems a bit cheaply made product from China. It is still working since purchase.  Take great care to empty filter every time and vent this properly. Can be vented inside or to outside.  The capacity is great and the largest I could find but I will check for another 120v brand next time.