Product review (1 stars): do not buy for undersink disposal use
This product works great for table lamps around the house, not for undersink use. There must be interference with stainless steel sink, because it does not work with a garbage disposal under the sink. It only works if you open the cabinet and hold the remote like 1 foot away from the receiver. I returned this product to Amazon for a refund. I found a cheaper one on ebay, but had the exact same results. The remote and receiver claim to work up to 15A loads, and most disposals are 1/4HP to 1HP motors, which is 186 to 746W, and on a 110V circuit, that's 1.7 to 6.8A. So this should handle one garbage disposal motor just fine. But under the sink, it doesn't.

What I did find to work with my disposal under the stainless steel sink is an outdoor lighting remote for Xmas lights. For some reason, it doesn't have the interference problems and works great. It just isn't white. And it's not advertised as a garbage disposer wireless switch.