Product review (5 stars): Works perfect. Exact replacement.
My old timer was sticking about half way between Optimal Dry and Off. Didn't want the house burning down if the dryer kept running for hours because I left the house or fell asleep. It was easy to replace. Unplug the power, about 7 screws on the back panel, remove the knob, twist the timer CCW and it pops out, put the new timer in and twist CW then swap the wires one at a time from the old timer to the new on, put the panel on and replace screws, plug it in and power it on. Took all of maybe 10 minutes to replace. All I needed was a phillips head screwdriver for the back panel and a pair of needle nose pliers to remove the wires. It looks identical to the original timer.