Apollo Intelligent DIN-Rail Input/Output Unit provides supervision of one or more normally open volt free contacts connected to a single pair of cables and a set of changeover relay output contacts. Compatible with XP95, Discovery and core protocol digital communication protocols. The intelligent DIN-Rail Input/Output unit is designed to be mounted on a 35mm width DIN-Rail inside an enclosure. This unit complies with the essential requirements of the EMC Directive 2014/30/EU, provided that it is used as described. And it is also complies with the essential requirements of the construction products regulation 305/2011/EU.