The 9155034 is a Logic Input/Output for use as part of the 2N® Helios IP Verso™ Modular Door Entry system. Used in conjunction with the Verso™ 9155101 or 9155101C Main Basic Units, this module provides logical inputs and outputs for sensor integration, door control or other devices requiring NO/NC switching. The Verso™ 9155034 Logical Input/Output Module can be positioned behind another Additional Function Module and, therefore, does not require its own Module space position. This I/O Logic Module is a component part of the 2N® Helios IP Verso™ Modular Door Entry range.