A technique is directed to methods and systems for outputting alerts on user interfaces. In some implementations, an alert system can identify devices connected to the alert interface and determine the user interface capabilities (e.g., audio, visual, or vibration) of each device. Upon receiving an alert of an emergency event, the alert system can determine the location of the user within a structure and select a device(s) nearby the user to transmit or display the notification of the emergency event to the user. The selected device can identify the emergency event and output the alert based upon the visual audible, or vibration user interface capabilities of the selected device.