My Aeotec Doorbell Siren just recently started blinking like this:
There does not seem to be an issue with pending notifications or battery level. The manual does not have any notes on blink codes. Does anyone have a hint as to how to turn the blink off or why it may be doing this?
@dan3 - The LED flash seems to be an indicator for #1 button low battery. (indicated by 100ms LED flash, 5 second delay and repeat).
I have noticed sometimes that the battery indication could be wrong sometimes which you can refresh it in 2 ways:
remove the battery from Button 1, wait 10 seconds to allow all power to drain out of its capacitors, then power it back up.
Press Button #1 which should refresh its battery level.
If possible check Parameter 52 (it is a GET only parameter, so you can only request information from this parameter while it cannot bet set with a different value manually).
Parameter 52 should report the battery power level in mV which should be a better or more clear indication of the battery level of button #1.