> I'm hoping one of these days someone on HN who is an authority will post a buyer's guide. I’m guessing you would need to buy products from a commercial build

> I'm hoping one of these days someone on HN who is an authority will post a buyer's guide. I’m guessing you would need to buy products from a commercial building controls line to get sensors that actually work. Alerton (Honeywell), Distech, Johnson Controls, Automated Logic, Siemens, Trane, and others have commercial building automation lines.