The question is not that it can not be done, but how many units will sell.
Development is very expensive, even for small projects.
The second major expense is to get approvals from SANAS and NRCS in order to have public consumption.
The third major expense is marketing, and getting it in at retail outlets.
Barring all this, as an individual with the know how you have, and a little of 'C' type programming, you probably could put up a project using a
Arduino Projects and relay board with open source software, which you can patch together and compile and run.
In fact you can do a Google search on Arduino projects or Arduino with what you looking for in the search string, and you will be bound to find a project similar to what you want.
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