Model number-Rated power??WDF-B3-3??4W? ?WDF-B3-5??7W? ?WDF-B3-5-WW??7W
Country of origin??China
Rated voltage and rated frequency??AC220-240V 50/60Hz
Rated useful luminous flux:4W-320LM? ?7W-574LM? ?
Efficacy (lumen/Watt):4W-80LM/W? 7W-82LM/W??
Lamp displacement factor ??PF??0.4? DF??0.4(4W)? PF??0.5? DF??0.7(7W)
Rated life time of the lamp in hours;??20000hrs
Color temperature??6500K ??3000K
Number of switching cycles before premature failure ??15000
Color rendering index (Ra)????80
A warning if the lamp cannot be dimmed or can be dimmed only on specific dimmers??Non-dimmable
Actual values of all hazardous material contained in the lamp/luminaire??Mercury free
Lamp dimensions in millimeters (length and largest diameter)??4W/7W:60*108
1.If the lamp is damaged and cannot work normally, it must be repaired or replaced by a qualified professional electrician!
2.If the lamp is damaged by accident, be sure to turn off the power before cleaning the lamp debris, wear protective gloves and goggles, to avoid electric shock, injury, and life danger. Debris cannot be directly discarded in the trash can, and should be classified as non-directly recyclable waste, and recycled by a qualified organization.