I have a bunch of outdated hardwired smoke detectors that need replacing so I’ve been doing a bit of reading on the subject. Still have some questions though. I’m thinking of using one Combo Smoke/CO unit per floor and Smoke-only for the remaining units, integrating into Vera and Honeywell Vista alarm system. Since there is a single interconnect line linking the units, does that mean that there is some kind of communication logic used to distinguish a smoke event from a CO event? I see that Kidde offers 2 different relay models, one for smoke and one for CO. This seems to be the only brand to offer this, so I’m leaning towards getting the Kidde detector units vs. whatever other brands, like FirstAlert or BRK.
On the other hand, it seems that all the currently available Z-wave sensors are only battery powered, so I’m discouraged from using that method. I also have two smoke/fire detectors hardwired into the Vista panel as one zone. I have to check if these are photoelectric or ionization units. I guess I’ll have to add a wireless zone each for the new Smoke and CO sensors.
Am I missing something important before I pull the trigger on the purchasing? Thanks!