Tender For supply of double rail contact assembly (web detector) consisting of 01 no. of web mountin g type tx coil and 01 no. of web mounting type rx coil with track side ejb (field unit) complete with cards suitable for msdac as per rdso specification no. rdso/spn/176/2013 (version 3) or latest (cel make) [ w arranty period: 30 months after the date of delivery ]