Coordinate room-level communication functions through a dedicated Room Controller 4 hardware component finished in light grey. The Ascom NIRC4-GMN is intended for installed room communication environments where a room-level controller is required as part of the overall system. Its physical controller format keeps the room-control function separate from handheld devices, display endpoints, and software applications. Use this controller where the required installation calls for the Room Controller 4 designation and a light-grey enclosure. The color is a practical identifying characteristic when matching equipment already deployed in rooms, corridors, or clinical communication areas. It is supplied as hardware, making it appropriate for installations that require a physical controller component rather than a subscription, service entitlement, or user-accessory item. Room Controller 4 distinguishes this unit as a room-control product within Ascom communication hardware. Confirm the required room-system architecture, controller position, finish requirement, and associated installation components before selecting it. This approach helps ensure the controller aligns with the intended room location and the communication functions assigned to that position.