Supply of Block Proving by Digital Axle Counter using UFSBI for single line suitable for 25KVRE area as per IRS specification No. IRS: S- 105/ 2012 ( Ver. 0 ) or latest Each set shall consists of the following ( i ) Universal Fail Safe Block Interface complete with all accessories as per RDSO specification No. RDSO/ SPN/ 147/ 2005 & IRS specification No. IRS: S- 105/ 2012 ( ver. 0 ) or latest = 2 Nos. ( ii ) Relay Rack with locking & sealing arrangement = 2 Nos per set with Relays ( QNI = 44 Nos., QNAI = 12 Nos., QLI = 4 Nos., Electronic Timer = 2 Nos. ) ( iii ) Block Panel complete with accessories as per RDSO Drg. No. RDSO: S- 32019 = 2 Nos. ( iv ) Block Telephone with accessories suitable for block panel = 2 Nos. ( TS attached )