TC reported smoke external at front m2 car. Staff (AMK)Confirmed no abnormality. T241 line clear n o abnormality. ~~~~~ #2512 Alarm reset.No Heat Or smoke Detected. 45014 #2512 FC 721 x 1 time.Check smoke detector no sign of water ingress.For preventive replace smoke detector unit.Conduct functional check ok and plaseal done on all car. #2512-smoke detector:- s/n:  Not: 2474974 raise. Done by Saini/Haslan/Asruddin  30/03/23