... Light ColorCW/WW/R/G/B/Y/RGB7. Beam angle (with lens) 15,° 30°,45°,60°, 90° 8. Color ... ColorCW/WW/R/G/B/Y/RGB7. Beam angle (with lens) 15,° 30°,45°,60°, 90° 8. Color ... and stability7.No radiation, no flicker ,no ultravioletApplication of LED spot lightvilla, meeting room, office, school,hospital,residential lighting. ... sure it is intalled with power off.3.can not be applied to dimmer device.4.please do ...