Apollo Intelligent Input/Output Unit provides supervision of one or more normally open contacts connected to a single pair of cables and a set of changeover relay output contacts. The Intelligent Input/Output unit is available in the new faceplate style enclosure. This can be mounted with the supplied back-box for surface mounting or flush mounted using a UK double gang, flush mounting back-box of minimum depth 30mm. Compatible with XP95, Discovery and core protocol digital communication protocols. The Intelligent Input/Output unit complies with the essential requirements of the EMC Directive 2014/30/EU, provided that it is used as described.