supply of electronic timer (time relay mfs) 110v dc 0.05s to 300 hrs, blinking interval 2second and used f or external power supply/emergency brake of lhb type ac coaches as per abb catalogue no. ct-mfs.21, sie mens catalogue no. 7pv07231az20, schneider catalogue no. re22r2mmw, l&t cat. no. 2a8dt6, carlogav ajji cat. no dmb01dm24, phoenix cat. no. emd-bl-2ti-230-pt, dold cat. no. mk7850n and luetze makes o nly acceptable, place of installation s1k18 as per bill of material and confirming to rdso spec. no.rdso/pe/s pec/ac/0184-2015 rev.1 and as per update of common bom items issued by rdso lr. no. el/7.1.108/mss bc, dt. 17/09/21 suitable for lhb type ac coaches switch board cabinet. accepted description : electronic timer (time relay mfs) 110v dc 0.05s to 300 hrs, blinking interval 2second and used for external power supply/emer gency brake of lhb type ac coaches [ warranty period: 30 months after the date of delivery ]