Abstract: A lockdown system for use in a building including multiple rooms with doors providing access to the rooms, the lockdown system including: at least one room lockdown component provided in each of a plurality of the rooms, the room lockdown components comprising door-securing devices that are external of the doors and, in a deployed condition of the room lockdown components, are manually positioned inside said rooms to oppose inward movement of the doors and thereby block or secure the doors, the room lockdown components further characterized by a non-deployed condition in which the door-securing devices are positioned at storage locations inside the rooms, and wherein further each room lockdown component is operative to automatically signal initiation of a lockdown event when its door-securing device has been moved from its storage location; and at least one communication device operative to receive the signaled initiation of a lockdown event when any one or more of the door-securing devices have been moved fr

Abstract: A building lockdown system for a building with multiple rooms with doors providing access to the rooms, the system including smart light fixtures positioned inside and outside at least some of the rooms, at least some of the smart light fixtures configured to be selectively illuminated in each of a plurality of colors, and room lockdown components provided in the plurality of rooms, the room lockdown components adapted to block or secure the doors of the rooms against opening in a deployed condition of the lockdown components. The smart light fixtures and the room lockdown components are equipped with BLE sensors defining a BLE mesh network. The room lockdown components are adapted to communicate, via the BLE mesh network, whether they are in the deployed condition thereof, and are further adapted to provide audio and/or visual signals.