supply of network video recorder, cctv ip camera with m12 & power converter of 110v dc , network video recorder (nvr) suitable/similar to dahua model no: dhi-mnvr4208-gfw with accessories; technical specification: 1) 2tb ssd with 2gb cache memory, 2) 256 gb sd card, 3) 8 channel nvr with m12 connector only along with necessary software and control equipment as per icf specification no. icf/md/spec-269 issue status:02 rev.:00 and having compatibility with cctv systems installed in lhb coaches. note- one sample to be approved by interfacing with existing cctv system before bulk supply. [ warranty period: 30 months after the date of delivery ] ] , cctv ip camera with m12 connector confirming to icf specification no. icf/md/spec-269 issue status:02 rev:00 date 01.04.2021. similar to make dahua model no. dh-ipc-hdbw4231fp-m12 or hikivision model no. ds-2cd6510d-1. suitable for cctv installed in lhb-type coaches. note:- sample t o be approved before bulk supply. [ warranty period: 30 months after the date of delivery ] ] , supply of power converter of 110v dc to required device input voltage (9 to 36v dc). 100w (min) suitable for rolling stock application conformi ng to en-50155 as per icf spec no. icf/md/spec-269 issue status: 02 rev: 00 suitable for cctv installed in lhb type coaches. note- one sample to be approved by interfacing with existing cctv system before bulk supply. [ warranty period: 30 months after the date of delivery ] ]