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Manufacturing and marketing of Circadian Lighting LED fixtures and modules. Optional eye-safe LED lamps are offered for blue safe RG0 exempt group per IEC 62471, as well as peak blue color wavelength of 460 - 480 nm. Those eye-safe LED lamps do not pose safety issue to retina when exposed for long time viewing, especially to kids and teenagers. Peak blue color wavelength of 460-480 nm in the cool white light induces the highest sensitivity to Melanopsin (retinal ganglion cells) for suppressing the secretion of Melatonin, thus making the users more alert and focused during the daytime. During the evening and before going to bed, dimmer warm white light will not impede the secretion of Melatonin, thus helping the user to sleep better and faster.The Circadian Lighting LED fixtures are controlled by DALI (Digital Addressable Lighting Interface) Device Type 8 protocols for easy dimming the brightness and adjusting the color temperature.