Tenders for Supply of Led Based Emergency Automatic Light Unit, Type Ii, With 12V, 7Ah Capacity Sealed Maintenance Free Battery For Lhb Coaches Conforming To Rdsos Specification No. Rdso/Pe/Spec/Ac/0180-2016Rev.0 And Rdso Drg. No. Rdso/Pe/Sk/Tl/0181- 2016 Rev.0 Sheet 1&2.