... 3, Power factor:80 4, Certificates: CE, ROHS, UL led flat panel 21WPart number: BDL-P21-001Wattage: 21WDimensions: 600mm×600mmWorking Voltage ... , No UV or RF interference, Patented heat sink and optical diffuser, longer than incandescent & fluorescents. No mercury, no ballast required and ... , kitchen, display, backlight, home indoor lighting and so on. led flat panel 21W