I have a 2GIG-PANIC1-345 mounted in my garage. I was not touching it or anything and the red light came on for a long second or so.
I called dispatch and they said they did not receive a signal.
I am wondering why this light may have come on all by itself. No low battery alerts.
I’ve never actually watched one for 70 minutes, but I do not think supervision would kick on the indicator LED.
As far as I am aware, low battery and panic signals should be the only two signals that turn on the indicator. In this case, low battery seems the likeliest, even though no alert was received. How long have you had that sensor? You may want to replace the battery and then test to ensure function.