This is a First Alert problem and not the Ring app. I use these smoke/CO2 dectors with Smartthings and Iris by Lowe’s before that and neither app, gave you a warning at all but the smoke alarm will chirp! I think its because these detectors use (2) AA batteries and not lithium and they can drop quickly! A flaw in the detectors design!I have used these for years and of course with me they never start to chirp until I’ve left home and it freaks my cat out for the whole day until I get home and change the batteries to get them to shut-up! Only thing I can say is when they get around 70% just change them to avoid the issue! Smartthings will say 70% yet the detector is chirping meaning LOW battery. I wish First Alert would redesign these to use the common CR2 batteries used in most wireless sensors (All of Ring’s gen1 sensors). Unfortunately Ring does not give you a percentage on the battery just an icon…
Thanks for the post because I was thinking of resetting mine and connect with RING but, I think I will leave them alone for now as I know how they act with Smartthings…