Product review (4 stars): I am using it on a garbage disposal that was causing the wall switch to go ...
I've only had this a few days but it appears to work as advertised.  The only complaint I have is that the transmitter requires a battery and there was NOTHING in the package that told me what battery to use except that it was 12 volts.  I was lucky I have a automatic gate opener that uses a 12 volt battery that works in this unit.  I am using it on a garbage disposal that was causing the wall switch to go bad every 6 months or so.  I will write another review if it craps out or not.  At about $15 it will be easy to replace if it fails.