TIMS showed Smoke Internal at car 1560.Staff(KTB) checked and confirmed no signs of smoke / fire / burning smell on interior of train. Train was escorted to te rminal station. TIMS showed Smoke Internal at car 1560. Staf ~~~~~ T245 3559 (N) TIMS showed Smoke Internal at car 1560. Staff(KTB) checked and confirmed no signs of smoke / fire / burning smell on interior of train. Train was escorted to terminal station. SBW NB CE checked:1560 smoke internal alarm SDR1 able to reset.Depot please check.  1560 SDR1 re-install. Smoke internal no.1 end found sensor dusty, Clean up and functio test ok. Done by Koh/Jack 22.05.24