The First-In Messengers™ provide a visual alert via text-message indicators used throughout the fire station. In addition to indicating the company assigned to the call, Messengers can relay critical incident information such as response level, address, hazardous materials data, medical conditions, highway detours or hydrant status. Messengers are most commonly used in apparatus bays, dayrooms and in military or civilian ARFF crash stations.

At the time of an alert, the Messengers display a text version of the audio pre-announcement, such as “Brush Truck 2 Response, Wildfire.” Additionally, Messengers allow the dispatch center, fire headquarters or the communications division to send a nonverbal announcement to all stations with a single command.