Product review (5 stars): So easy a caveman could do it.
My old switch had locked up in the 'ON' position, so that when you turned the dryer to whatever cycle you wanted it would start running right away. Not really a huge deal and we got accustomed to this, but eventually the timer failed and I suspect it may have been due to this. Either way a cheap fix, and easy to install. Plug and play. took a bit of getting used to, using the dryer as intended again!