(19)

(11)

EP 3 821 416 A2

(12)

(88) Date of publication A3: 20.02.2020 (43) Date of publication: 19.05.2021 Bulletin 2021/20 (21) Application number: 19746259.1 (22) Date of filing: 11.07.2019

(51) International Patent Classification (IPC):  G08B 17/107(2006.01) G08B 29/14(2006.01) G08B 25/00(2006.01) G08B 29/20(2006.01) G08B 25/14(2006.01) (86) International application number: PCT/US2019/041375 (87) International publication number: WO 2020/014462 (16.01.2020 Gazette 2020/03)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 13.07.2018 US 201862697580 P 13.07.2018 WO PCT/CN2018/095540 (71) Applicant: Carrier Corporation Palm Beach Gardens, FL 33418 (US)	(72) Inventors: BIRNKRANT, Michael J. Hartford, Connecticut 06108 (US) FINN, Alan Matthew Hebron, Connecticut 06248 (US) ALEXANDER, Jennifer M. Hartford, Connecticut 06108 (US) LINCOLN, David L. Hartford, Connecticut 06108 (US) (74) Representative: Dehns  St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)