Thanks for all the feedback. To address some of your points:
- Nest smoke detectors only work with other Nest smoke detectors. There's no way to add a different type of detector to their proprietary network, either wired or wireless.
- Can't easily run wire to the house, and that wouldn't solve...
Longtime lurker, new member here.
Moved into a new house last year that has a detached workshop about 150 feet from the main house. I use this workshop for winter car storage and woodworking/limited metalworking.
For a number of obvious reasons, I'd like to install some kind of fire detection...