Supply of Led Based Emergency Automatic Light Unit Type-I, Including 12V, 7Ah Capacity Sealed Maintenance Free Battery For Sg Ac And Non Ac Coaches Conforming To Rdsos Specification No. Rdso/Pe/Spec/Ac/0180-2016 Rev. 0 Specn: Icf Specn. No. Icf/Elect/917 Rev. - 1.