@Wayne-TP sorry for late response, no, the last was connected to the radiator while in pairing process. that's why low bat was shown after registration. Rest was paired aside from radiator, than...

@Necessiter Hi, many thanks this worked for me. I reminded that as I have installed three KE100 devices, the only last of them show low batt error. even after batt changed / both brend new It is most...