The room terminal is the central control and operating unit for patient or resident rooms. Large buttons serve to mark the presence of care personnel and doctors and to trigger calls and emergency calls. The red button is used to trigger calls and contains a red LED as a location/reassurance light. The green button with a green presence lamp is used for presence marking. The yellow button can additionally be used to display the presence of a second caregiver. The blue button also features a red location or reassurance light, and triggers a doctor alert. A 2x8-digit dot matrix display with backlighting shows the most important information.