Product review (1 stars): Too Early a Failure of This Switch.
Within a few months this new switch started doing the same thing that the bad switch I replaced it with was doing...erratic power to coil burner. Sometimes it won't turn down from the high position...have to shut off completely, then switch on again to desired heat level. Sometimes it won't start at all at any hat level than high. Frustrating. My original switch lasted over 20 years. I would've expected this one to have last at least 5+ years!