Check the patents before you end up in court.
Many commercial products are already being sold, are you cheaper, are you better, how about security ?
So think first why your product would be different than the others, also think from a consumer point of view, will they do business with a single individual startup for their infrastructure or a brand where you can buy from in each store or internet webshop?
Some brands that have connected lighting: Emlight, Ikea, Milight, Philips, Cree, MiPow, Lifx, GE and probably forget some.
https://www.pcmag.com/article2/0,2817,2483488,00.asp