OK, when you read this you may think I'm some 'know it all' prig.....but the following list are the things you should have committed to a business plan before you try to do crowdfunding. A LOT of people misunderstand the purpose of doing a business plan, they think it's purely to send to other people to get them to sign on.
The practical reality however is the reason to do a business plan is to challenge your own assumptions and beliefs about what you're trying to achieve and how you intend to get there, you'll be amazed at the differences in your first draft of the plan and the final version you're happy to expose to potential investors.
Thomas Edison used to say Invention is 1% inspiration and 99% perspiration, let me tell you from personal experience he was absolutely right.
1. What problem are you trying to solve and why? Is this a better mousetrap (i.e. a better iteration of existing solutions) or is this a ground breaking solution to a problem no-one has solved before.
2. What is your market size and what are the likely costs to reach that market? Do you want to go direct marketing and sell direct to consumers, if you do then have you thought about the costs of support staff and resources? If you intend to go indirect through retailers only, have you built enough margin into the product to give those retailers? How are you going to cashflow the quantity needed by those retailers when they don't pay for 60-90 days in practice?
3, Is this a 'stand alone' product or the first in a series of products in the same space?
4. Who are your likely competitors, now and in the future?
5. Where are you going to get manufacturing done? How are you going to ensure quality control? What are the minimum production runs needed for the product to be economically marketable at your target price?
6. What have you done to protect any intellectual property rights associated with the product? Can you protect it or could it be ripped off by a rogue far eastern manufacturer?
These are just the quick ones that spring to mind, I could come up with a substantially longer list with some time.
I don't mean to rain on your idea, just make you look at it in the cold hard light of commercial reality.
One item that I'm quite surprised doesn't seem to exist in this sort of space is....
A Single/Multi gang Wall Socket that includes zigbee and zwave with Energy monitoring and a number (minimum 2 but 4 would be better) USB-C ports. In my opinion your route to market on this idea would be try to get the govt to legislate the requirement to fit energy monitoring wall sockets as part of all new builds.....that gives you an immediate and substantial market with no marketing effort at all and could be sold by the govt as enhancing their green credentials.