Supply Of Led Based Flasher Light System As Per Rdso Specification No. Elrs/Spec/Lfl/0017 (Rev.1 Sept. 04). Suitable For Use In Supply Systemvoltage Of Type E Operating Voltage 110 Vdc, One No Consists Of : (1)lamp Unit With Hood As Per Altos Drawing No. Alt 03 Rev. No. 02 Approvedby Rdso, Qty 1 No. (2) Control Unit As Per Our Drawing No. Fl M 04,Rev.04, Approved By Rdso, Qty 1 No , Make: Altos Or Equivalent.