The AUBE is the largest and oldest conference of its kind in the science and research surrounding fire detection and alarm. This year the event will be organised from September 21-23, 2021. As in 2014 and 2017, the 17th International Conference on Automatic Fire Detection (AUBE ’21) is combined with SupDet; an annual conference on Suppression, Detection and Signaling Research and Applications. It will be either a hybrid event at the University of Duisburg-Essen, Duisburg (Germany) with both on-site and online presentations and discussions or an online-only event. More information on visiting the conference can be found in this Save the Date flyer.