An automatic sensing system includes at least one LED lamp, and at least one sensing control device. Each of at least one LED lamp includes at least three operation modes. The three operation modes includes a closing mode, a low light mode, and a fill light mode. The sensing control device includes an illumination detecting module, a pyroelectric sensing module, a signal processing module, and a lamp control module. The signal processing module is configured for processing the signal data output from the pyroelectric sensing module based on the signal data detected by the illumination detecting module and outputting a control signal. The lamp control module is configured for controlling all of the LED lamps to work in one of the three operation modes so as to make any one of the at least one sensing control device to control all of the LED lamps to work. The invention further includes an automatic sensing control method for LED lighting.

A protection circuit for short circuit of LED power supply includes a constant voltage source powered by the LED power supply, a constant current source powered by the LED power supply, a switching module for controlling the constant current source to turn off or turn on, and an output current detecting module for controlling the switching module to turn off or turn on. The constant current source is provided in parallel with the constant voltage source. The switching module includes a P-typed triode connected in series to the constant current source. The output current detecting module includes a N-typed triode, a base of the N-typed triode being electrically connected to the output terminal of the constant voltage source, an emitter of the N-typed triode grounding, and a collector of the N-typed triode being electrically a base of the P-typed triode.

Devices and methods for protecting against a surge in a luminaire are provided. For example, a controller for use with a luminaire is provided. The controller can include a first circuit configured to sense a surge in voltage or current. The controller can further include a second circuit configured to switch a relay in response to the first circuit having sensed the surge in voltage or current.

The invention relates to a control system for a lighting system comprising at least one control adapter having a digital interface for connection to an assigned digital control bus, to which a plurality of light-technology operating components such as control gear, ballast devices, sensor units, and/or switch units are connectable as bus users by means of a respective digital interface, wherein the at least one control adapter furthermore has a controller and a wireless interface for data coupling of the control adapter to a wireless network terminal. The control facility according to the invention is distinguished in that for at least one lighting system template, the respective comprised light-technology operating components and at least some of configurations and/or parameterizations assigned to the operating components are stored in a memory, which can be read out by the wireless network terminal, wherein the bus users connected to the digital control bus are detected for the configuration and startup of the lighting system. The invention furthermore relates to a method for the configuration and startup of such a facility.

A control device may comprise a plurality of buttons, a plurality of light sources located behind the respective buttons and configured to illuminate the buttons, a light detector circuit configured to measure an ambient light level around the control device, and/or a control circuit configured to control the light sources to adjust surface illumination intensities of the respective buttons in response to the measured ambient light level. Each button may comprise indicia indicating a function of the button. The control circuit set the first button as active and the second button as inactive in response to an actuation of the first button. The control circuit may, based on the measured ambient light level, control the light sources to illuminate the first button to an active surface illumination intensity, and to illuminate the second button to an inactive surface illumination intensity that is less than the active surface illumination intensity.

A control device may comprise a plurality of buttons, a plurality of light sources located behind the respective buttons and configured to illuminate the buttons, a light detector circuit configured to measure an ambient light level around the control device, and/or a control circuit configured to control the light sources to adjust surface illumination intensities of the respective buttons in response to the measured ambient light level. Each button may comprise indicia indicating a function of the button. The control circuit set the first button as active and the second button as inactive in response to an actuation of the first button. The control circuit may, based on the measured ambient light level, control the light sources to illuminate the first button to an active surface illumination intensity, and to illuminate the second button to an inactive surface illumination intensity that is less than the active surface illumination intensity.

A control device for power delivered to electrical loads in a load control system via respective load control devices may comprise a programming user interface for programming the operation of the load control system. The control device may be configured to select one or more load control devices in response to successive actuations of a programming button of the programming interface. The control device may be configured to controllably illuminate visual indicators of the programming interface to indicate which of the load control devices is selected in response to successive actuations of the programming button. The control device may transmit programming information to the load control devices. The programming information may determine which of the load control devices are responsive to a digital message transmitted on the digital communication link.

A control device for power delivered to electrical loads in a load control system via respective load control devices may comprise a programming user interface for programming the operation of the load control system. The control device may be configured to select one or more load control devices in response to successive actuations of a programming button of the programming interface. The control device may be configured to controllably illuminate visual indicators of the programming interface to indicate which of the load control devices is selected in response to successive actuations of the programming button. The control device may transmit programming information to the load control devices. The programming information may determine which of the load control devices are responsive to a digital message transmitted on the digital communication link.

A control device for power delivered to electrical loads in a load control system via respective load control devices may comprise a programming user interface for programming the operation of the load control system. The control device may be configured to select one or more load control devices in response to successive actuations of a programming button of the programming interface. The control device may be configured to controllably illuminate visual indicators of the programming interface to indicate which of the load control devices is selected in response to successive actuations of the programming button. The control device may transmit programming information to the load control devices. The programming information may determine which of the load control devices are responsive to a digital message transmitted on the digital communication link.

A control device may comprise a plurality of buttons, a plurality of light sources located behind the respective buttons and configured to illuminate the buttons, a light detector circuit configured to measure an ambient light level around the control device, and/or a control circuit configured to control the light sources to adjust surface illumination intensities of the respective buttons in response to the measured ambient light level. Each button may comprise indicia indicating a function of the button. The control circuit set the first button as active and the second button as inactive in response to an actuation of the first button. The control circuit may, based on the measured ambient light level, control the light sources to illuminate the first button to an active surface illumination intensity, and to illuminate the second button to an inactive surface illumination intensity that is less than the active surface illumination intensity.