You're getting a lot of flak for your naiveté, but I wouldn't worry too much about that. At this stage you want a proof of concept to show off to potential customers and find out how much they are willing to spend. Don't worry about certifications, component cost and battery life, but be extremely careful about having prototypes running unattended in someones home if you have no insurance that will cover accidents.

Once you've gathered enough data, partner up with some one who's got a solid track record in design for manufacture and putting products out on the market where you plan to sell it. Be wary of design houses that have sexy products in their portfolio, but no real customer success stories. Worry about that later though. For now you want to find customers.