1 Watt LED lamp type D, 90- 140V DC, E27 metallic screw cap bulb, with constant current driver operation for retro fitment in place of existing 25W screw type IC lamps operated with110V DC supply in railway coaches in place of Night Light/ Alarm lights inline with ICF Spec. No. ICF/ Elec./ 960 ( Rev. 0 ) CS1, CS2, CS3 or latest Accepted make/ brand: PLUS TECH, LORD JYOTHI, ENSAVE OR any other equivalent make