An emergency lamp has a first line contact configured for connection to a first line. A second line contact is configured for connection to a second line. The second line is not switched. A neutral line contact is configured for connection to a neutral line. The voltage checker changes a mode of a main driver enablement signal and an emergency driver enablement signal when the voltage checker does not sense voltage. The voltage checker is electrically connected to the second line. A main driver is powered by the first line and the neutral line. The main driver is controlled by the main driver enablement signal. An emergency driver is powered by a battery. The battery is maintained by a charge controller. The charge controller is powered by the second line and the neutral line. The emergency driver is controlled by an emergency driver enablement signal.

A new system and apparatus for selectively interrupting the power supply of lighting elements is described by example herein. The system may include a power interruption apparatus in electrical communication with a lighting element such as a motion activated security light. In preferred embodiments, the apparatus may include a power interruption module configured to selectively interrupt the power supply to the lighting element to change the status mode of the lighting element. In some embodiments, the apparatus may be controlled by a wireless remote control while in other embodiments the apparatus may be controlled by a wall switch. In yet further embodiments, the apparatus may be configured to partner with a home automation system through a home automation remote thereby allowing a user to selectively change the status mode of a lighting element using an interface specific to their home automation system.

The present invention discloses a lighting system, comprising: an emergency power supply assembly, a lighting assembly, at least one first electrical connection for connecting the emergency power supply assembly, and at least one second electrical connection for connecting the lighting assembly, wherein the at least one first electrical connector and the at least one second electrical connector work with each other to form a quick connection between the emergency power supply assembly and the lighting assembly. The present invention also discloses an emergency power supply assembly. The present invention further discloses a lighting assembly. The present invention also discloses a lighting system installation method.

Lighting units, systems, and methods are described herein for determining whether occupancy detections are legitimate or not. Methods and systems are further described herein for powering down a network of power over ethernet (PoE) components.

A lighting system, an identification system and an identification device for a lighting system, wherein the lighting system comprises a plurality of components. The identification device comprises a transmitter adapted to receive an identification request, and a signaling apparatus comprising a control unit and one or more signaling devices, wherein the control unit is adapted to control the one or more signaling devices so that, in response to receipt of the identification request, an identification signal is produced that alerts a human to a location or direction of one or more of the components.

Disclosed is a method of determining depreciation of a lumen output of an LED. More particularly, disclosed is a method of determining depreciation of a lumen output of an LED comprising monitoring, by a processing device, an operating characteristic of an AC power source operatively coupled to the LED; determining, by the processing device, whether a lumen output the LED depreciated beyond a specified lumen value based on the monitoring; and causing, by the processing device, an indicator to provide notification to a user based on determining the lumen output of the LED depreciated beyond the specified lumen value.

An emergency lighting device includes a housing, a light emitter positioned in the housing, a control circuit positioned in the housing and operatively connected to the light emitter, an indicator light positioned in the housing, and a fault indicator circuit positioned in the housing and operatively connected to the indicator light. The fault indicator circuit is configured to monitor the light emitter, analyze activation of the light emitter, and activate the indicator light based on the analysis of the activation of the light emitter.

An illumination system and methods for controlling the illumination system are provided. In one embodiment, the method includes providing a plurality of illumination sources, monitoring optical output power of the plurality of illumination sources over a period of time, and controlling the plurality of illumination sources to maintain a predetermined level of optical output power. The method further includes compensating for degradations of one or more of the plurality of illumination sources to maintain the predetermined level of optical output power, predicting a lifetime of the illumination system based on the parameters of the plurality of illumination sources, and performing periodic maintenance of the plurality of illumination sources according to a quality control schedule.

According to the present disclosure, an optoelectronic component is provided with an organic layer stack, in which light is generated in operation of the optoelectronic component, at least one marking element, by means of which the optoelectronic component is identifiable, wherein the at least one marking element can be read out under irradiation using electromagnetic radiation from the nonvisible spectral range, the at least one marking element can be read out at a main surface of the optoelectronic component, and wherein the at least one marking element is arranged at or under the main surface in the region of the illuminated area.

Alighting system may include: at least one controller which may be configured to: obtain lighting logging data including feature information related to features of the lighting system and obtained from a plurality of feature spaces; determine lighting prediction data which predicts at least one component failure in the lighting system at a future time in accordance with the lighting logging data and include at least one complex feature; model predicted component failures which are predicted to occur at a future time in accordance with the lighting prediction data and maintenance cost; and/or store the predicted component failures model in a memory.