What I wonder about the combo units is if it creates confusion if it's a fire of CO leak. I know they have some now that talk while I think the others had lights.
We did them interconected with the somkes as combo units and seperate units with their own switch leg only to CO. I like the 2nd way better. Seems like the more you interconect the harder it is to find the bad one.
Most places here don't have CO requirements so it's a upsell or just on the print.
Tom
