LED type emergency light unit complete with battery, suitable for use in SG AC & Non AC conventional coaches ( Type- I ) and confirming to RDSO specification no. RDSO/ PE/ SPEC/ AC/ 0180- 2016 ( Rev- 0 ) and RDSO Drawing No. RDSO/ PE/ SK/ TL/ 0180/ 2016 ( Rev. 0 ) Sheet No. 1 & 2. ]