| 20090015175 | Brightness control system for LED lighting devices - The present invention provides a brightness remote control system for LED lighting device. There are two control modes, namely automatic mode and manual mode. At automatic mode, the brightness of the LED lighting device changes as the brightness of the environment changes to maintain preset constant brightness. At manual mode, the brightness of the LED lighting device can be changed instantaneously or at preset time or times. | 01-15-2009 |
