Abstract: An active shooter emergency response system includes a plurality of first lighting elements within a building that emit a first color of light in response to detection of a gunshot. The system also includes a plurality of second lighting elements within the building and spaced from the plurality of first lighting elements that emit a second color of light in response to the detection of the gunshot.

Abstract: A power over ethernet lighting system includes a plurality of nodes electrically connected to a power/communication bus. Each of the nodes includes a PoE interface, a micro-controller and a PoE driver electrically connected to a PoE luminaire. At least one of the nodes is an emergency management node that includes a rechargeable battery and a PoE battery charger. The system has a maintained mode in which the PoE luminaire of each of the nodes is powered by electricity from the power/communication bus, and has an emergency mode characterized by a power loss on the power/communication bus. A micro-controller of the emergency management node includes a charge control algorithm configured to determine a charge level of the battery based on a signal from a charge sensor, and configured to dynamically adjust an allocation of power to the PoE battery charger responsive to the charge level.

Abstract: A power over ethernet lighting system includes a plurality of nodes electrically connected to a power/communication bus. Each of the nodes includes a PoE interface, a micro-controller and a PoE driver electrically connected to a PoE luminaire. At least one of the nodes is an emergency management node that includes a rechargeable battery and a PoE battery charger. The system has a maintained mode in which the PoE luminaire of each of the nodes is powered by electricity from the power/communication bus, and has an emergency mode characterized by a power loss on the power/communication bus. A micro-controller of the emergency management node includes a charge control algorithm configured to determine a charge level of the battery based on a signal from a charge sensor, and configured to dynamically adjust an allocation of power to the PoE battery charger responsive to the charge level.