After paying an appliance repairman $200 to tell me he couldn't fix my electric cooktop, one burner of which was boiling water at the lowest setting, I took to Google and Youtube to figure out what the issue was. I watched a 5 minute APP video and ordered the infinite switch from their web site immediately. The part arrived in 2 days, and it took me all of 5 minutes to fix (10 including the time to find the right breaker to turn off - box in this new house wasn't labeled correctly). Thanks APP!