supply of consisting of following itemsconsisting of following items,supply of usb opto converter. make: efftronics or equivalent, suitable for the existing efft ronics data loggers. [ warranty period: 30 months after the date of delivery ] ] , supply, testing and commissioning of client pc for support to data loggers. spec as per ann exure-b. make: hp or dell or similar, suitable for the existing efftronics data loggers. [ warranty period: 30 months after the date of delivery ] ] , supply, testing and commissioning of dual port e1 to rs232 converter card. for data logger . specification as per annexure-c. make: efftronics or equivalent, suitable for the existing efftronics data l oggers. [ warranty period: 30 months after the date of delivery ] ] , supply, testing and commissioning of 24 volts ei extender for data loggers. specification as per annexure-d make/brand : team engineers or similar, suitable for the existing efftronics data loggers. [ warranty period: 30 months after the date of delivery ] ] , supply, testing and commissioning of 48 volts e1 extenders for data loggers. specificatio n as per annexure-e-. make/brand : team engineers or similar, suitable for the existing efftronics data log gers. [ warranty period: 30 months after the date of delivery ] ] , supply, testing and commissioning of data entry terminal for entry of train details and com municating the information to cmu via data logger at station. specifiction as per annexure a make : icts or nexcom or advantech or similar. suitable to the existing efftronics data loggers. [ warranty period: 30 months after the date of delivery ] ]