Product review (5 stars): Just as advertised and arrived much earlier than promised
When the dryer failed to heat I assumed it was the heating element. But after watching some Utube videos, I discovered that these sensors are just as likely to be the problem. It turned out my dryer vent was plugged & the dryer overheated.

If you know how to use a multimeter, you can quickly test the sensors to see if they've blown. If so, they have to be replaced. The local appliance store wanted $30 for the same thing. Only one of them was blown & my dryer is now happy.