They were always activated and on my account. They're still there and active (we haven't sold the house yet)
First Alert has an expired date now and you can't turn off the warning sound my Zcombo detectors were 7 years old. I recently replaced 3 of them.
Well I installed the six First Alert/BRK SC9120B hardwired combo (Ion/CO) alarms.
Home Depot had the metal blanks, in white, for the now-unused ceiling junction boxes.
The BRK RM4 relay with Ecolink contact sensor works great-can see it work during testing. It activates when any alarm is on and de-activeates when off. It does both NO and NC. I made it NC just because Dashboard shows open in Red, lol.
I'm not crazy about the 9v battery backup though; I've had digital clock radios in the past that drained after very short outages. First Alert says it should last 7 days after a power outage, but they don't say if that's just before the low battery chirping starts. The interconnecting signal must consume more juice. I wonder how well they would work in an actual power outage with batteries that are not quite up to par. In any event, I wouldn't run a generator in a bad place depending on it to keep me alive, lol.
FA does include the Ultralife 9v lithium battery as a recommendation, but nixes rechargeables.
They do have alarm and battery latching, so you can see which unit acted up.
I'd still like to have some sort of detection in the garage, seeing there's a fair amount of stuff that could go wrong in there. They say heat is best. I don't know. I'm not pulling cable out there (breezeway in the way, etc), so it'd have to be some kind of wireless setup, and not FA's OneLink, for reasons explained earlier. Perhaps a hardwired heat detector (by FA) hooked up to another EcoLink contact sensor, that kicks off unspecified-at-the-moment rules-siren?-geez.
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