Let me start by saying I don’t have any SMCO410 detectors.
I currently have 3 ZCombos of various vintages. 2 of my 3 ZCombos are connected using ZWAVE_S2_AUTHENTICATED and are working with the “Z-Wave Smoke Alarm-Mc” driver, so I don’t think S2 security is the problem.
I have a number of the first Gen ZCombo’s that work fine. They do not support S2 though. I only mention a potential S2 issue because that is the step these seem to freeze up on during pairing.
I have both a v2 hub and a v3 hub at my primary location, my security devices are connected to my v2 hub. The issue with the “offline” messages from my remote locations has resolved itself in the last couple of weeks. I just added another ZWave Combo Gen2 smoke/co detector to my 3rd location where I only have a v3 (Aeotec) hub.
I’m a little unclear - do these truly work correctly with a v3? I understand that you can get them to pair, but has anybody been able to get them to work with a v3 hub without the constant connect / disconnect warnings? If I’m reading this correctly, only Bruce (bbailly16) has had success, and that’s only with special replacements sent by First Alert?
Just following up with my experience… Purchased two from Costco, both seem to be working fine with the V3 hub. Manufacture date was Jan ‘26 if that matters. To get them in pairing mode you have to hold the button down on the detector for about 20 seconds (keep holding it after it beeps once until it beeps a couple times). It’s been over 24 hours and neither has disconnected.
How did you pair within the app specifically? I got in on same Costco deal and installed both yesterday, but haven’t been able to successfully pair yet.
It was a bit frustrating - I love how the First Alert instructions say to check the SmartThings app, and the SmartThings app says to check the First Alert instructions…
If I recall correctly, it was:
Hit ‘+’, then ‘Add device’ in the SmartThings app.
Select ‘Scan QR Code’
Can’t remember exactly what the app says then. I think you have to hit ‘next’ or something so it’s ready for pairing mode.
Hold the test button on the detector for about 20 seconds. After about eight seconds it’ll beep once - don’t let go or it’ll just go into test mode. After about 20 seconds you’ll get two beeps (or something like that). Let go of the button, then it seemed to take about 5-10 seconds and then the app brings up the usual screen about what you want to name the device, etc.
It worked. Thanks so much! Not sure if it was necessary, but I did bring each unit close to the hub (within 5 feet). Worked very fast and I’m glad I didn’t have to mess with 3rd party installations.
The navigation you describe appears to no longer exist - no “Tools”, and I can’t find anything called “Edge driver builder” in the developer console. Do you know how to get to this now?