Led Based Locomotive Warning Light System. One Set Consisting Of Two Items, 04 Nos.1) Lamp Unit With Mounting Hood - 02No./Set 2) Control Unit - 02No./Set. Rdso Spec. No. Rdso /Elrs/Sp Ec/Flasher Light/0017 (Rev. 1) Sep. 2004 [ Warranty Period: 30 Months After The Date Of Delivery ] ]