supply of micro controller based led panel , micro controller based led panel for demu dpc coaches of size 425mm (len gth) x 180mm (width) x 50mm (depth) with 24 led indications to be powered by vehicle int erface unit placed at engine cabin where all the 110v dc fault inputs will be terminate d. two wires for 24v dc and two wires for the communication runs from the vehicle interface unit to led panel. colour scheme and name as per bhel drg.no.15890030037, it em no.001,rev.7 note: manufacturers should indicate their identification mark, month and year of ma nufacture at a suitable location by using a suitable method without affecting the performance of the pr oduct. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]