All of S-Line sensors went offline simultaneously

Support
1

Looks like an issue with the supervisory signal.

All of my S-Line sensors (including CO/Fire) went offline at the same time. I have tried the following:

  • Manually triggering the sensor brings it back for like an hour but then it goes back to (?) status
  • Rebooted the panel multiple times
  • Checked that the white antenna wire is not pinched.

All Power-G sensors work fine and the daughter card test returns success.
What could be the issue?

Thanks!

2

It looks like that condition has since cleared in Alarm.com. Did it clear from any specific troubleshooting step?

3

So here’s what I did:

  1. Manually triggered all sensors (including the CO/Fire)
  2. Rebooted the Panel
  3. Removed the power supply and reconnected it.

It’s been about 12 hours since I did that and I don’t seem to have any supervision errors now. Does this mean this is resolved? Ideally I would like to get to the bottom of this and see what caused it.

4

Offline refers to a failure of sensor supervision signals.

When all sensors experience this around the same time, that suggests the panel radio experienced an issue, or there was interference. Usually a reboot can help resolve it.

Underpowering the panel is a potential cause, and with the IQ Panel checking that white antenna and making sure it is run out of the back of the panel into the wall is necessary.