An indoor growing environment for growing plants wherein due to the nature of the growing conditions the area is wet. If a high voltage device is in the growing environment near the water ground-fault protection is needed. To avoid the use of ground-fault protection, certain devices in the growing environment are powered by low voltage and the conversion to low voltage from a higher voltage is performed away from the immediate plant growing area or outside of the grow room

A display apparatus is disclosed. The display apparatus includes: a backlight; a main circuit; a power supply configured to output a first power to drive the backlight and a second power to drive the main circuit; a first battery configured to be charged by the first power and supply power to the backlight; a second battery which is connected to the first battery in series, and configured to be charged by the first power and supply power to the backlight and the main circuit; and a control circuit configured to control the first battery and the second battery to be charged with the first power for a first time period, and drive the backlight with first battery power of the first battery and second battery power of the second battery for a second time period.

The invention relates to an emergency lighting unit for supplying emergency lighting unit, comprising mains supply terminals, at least one first battery module comprising one or more cells in parallel, at least one second battery module comprising one or more cells and being connected in parallel to the at least one first battery module, a preferably common charging circuit for the first and second battery module and connected to the mains supply terminals, and an emergency driver circuit for supplying the emergency lighting unit off terminals of the emergency lighting unit, wherein the charging circuit is configured to charge and maintain the at least one second battery module to a charging voltage of maximum 50%, preferably maximum 30%, of a nominal charging voltage of the at least first battery module.

(FIG. 1)

Disclosed are systems and methods for adjusting environmental conditions based on automatically and manually generated requests. A commissioned unit comprising at least one IP luminaire (140, 150), transmits a signal comprising one or more identification codes. The signal may be, for example, a coded light signal. An environment control device (160) receives the signal, detects user input indicating one or more preferred environmental conditions, and transmits an environment control request comprising the one or more preferred environmental conditions. An environment manager module (110) receives the environment control request, generates an environment control command using the control request, and transmits the environment control command to one or more commissioned units to alter environmental conditions in a space in accordance with the user input.

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.

A lighting system for an electrical device includes one or more light sources coupled to an electrical outlet. The one or more light sources are configured to receive power from a power supply and configured to generate output light on at least one side edge of the electrical device. The lighting system includes a controller communicatively coupled to the one or more light sources. The controller is configured to receive a signal from an auxiliary unit and control the one or more light sources to operate between an on-state and an off-state responsive to the signal from the auxiliary unit.

A traffic signal back-up system assembly is provided for supplying traffic signals and other traffic control devices with electrical energy if the primary supply of electrical energy from the utility company is interrupted or disconnected. With the use of a lithium-ion battery bank, this assembly can store enough electrical energy to power a traffic signal for several days without restoration of the primary source of electrical energy. This assembly can be installed inside, on, or apart from the traffic signal control box as needed.

An apparatus includes a light unit and a controller for providing a controlled humanly visible illumination. A solar converter unit and an energy storage device supply an energy output to enable the light unit to provide the controlled illumination. The solar converter unit is configured to charge the energy storage device during a substantial shade charging condition. The controller includes a processor coupled to manage the controlled illumination, a memory accessible to the processor, and a program stored in the memory for execution by the processor to manage the controlled illumination.

The present invention relates to a converter unit for providing a supply current to a load device (2) using an energy storage device (6). The converter unit (1) comprises a controlling means (7) configured to set at least one charging parameter and/or a charging mode and to control charging of the energy storage device (6) based on the set charging parameter and/or the set charging mode; and at least a first terminal (S1), a second terminal (S2) and a third terminal (S3) for electrically connecting a two-pole status indicator light (8), wherein the controlling means (7) is configured to detect to which of the first terminal (S1), the second terminal (S2) and the third terminal (S3) the two-pole status indicator light (8) is connected and is configured to set the at least one charging parameter and/or the charging mode based on the detection result.

Systems and methods for a lighting device are described. The lighting device comprises a plurality of headlamps, a rechargeable battery, and a controller. The controller is configured to perform one or more diagnostic tests. The diagnostic tests determine a state of health of the rechargeable battery. Integrated computing provides self-diagnosis, as well as external environmental and security monitoring.