I'm going to parallel Rob a bit here.

You've managed to build something that has brought in $120k without investing dollars into outreach. Then you've invested it into (assumably) hardware. You've got a business with some value to it.

I don't know what you're making, but industrial is my space. If you'd like to drop me an email, I'd be happy to take a look at what you're making and give you some thoughts, potentially some introductions. Dave @ Capelin.io