First Alert Combo Smoke and CO2- one shows clear, other shows inactive

I have 2 First ALert Combination Smoke and CO2 connectors, both the same and fairly new. I just noticed one shows as “Clear” and the other shows as “Inactive”. I would assume the Inactive one is the problem. Is this normal for these? I was going to remove it and add it again but just wanted to see if anyone has seen this. TIA!


Inactive means that the hub isn’t able to communicate with it. Try adding a buffering repeater close to it and it should help improve your mesh stability and that should help it be “online”.

Kicker is, like in the example above, the alarm is less than 10’ away from ST hub and 15’ away from a zwave switch. What do you mean by buffering repeater?