I have an indoor light switch that controls an exterior outlet that I have a total of 700w of de-icing cables plugged in to. Can I install an hs200 light switch in this location?  Specs say that it's only rated to 600w incandescent, but I don't know if this translates to a different max load for de-icing cables (standard cables bought on Amazon and installed myself).  If hs200 doesn't work for this application, is there a product that would work?