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Description:

LED Bulb QY-D1 Series E27
Working Voltage:AC220V Lifetimeaa50000h Lamp Holder:E27 ColorTemperature: 5500K 500K

LED Bulb QY-D1 Series E27

Working Voltage:AC220V Lifetime≥50000h Lamp Holder: E27 ColorTemperature: 5500K±500K Light Color: White

 

Technical Parameter:

 

Working Voltage:AC220V
Lifetime≥50000h
Lamp Holder: E27
Color Temperature: 5500K±500K
Light Color: White

The LED lamp is designed as direct one-for-one replacements oftraditionally inefficient incandescent, fluorescent and halogenbulbs. With Cree High powered LED''s, 400 Lumen output for CoolWhite (300 Lumens for Warm White) and average life span of 50, 000hrs, this lamp is a great choice for any indoor Light Fixture or inenclosed outdoor fixtures.  And an excellent energy saver forall-night lighting of entryways, hallways or stairs. Warm White,Cool White available. Equivalent to a Traditional 60 Watt bulb.

 

LongLife: Realizing rated LED lamplife is dependent on meeting LED manufacturer’s recommendationsfor:- operatingtemperature- operating voltage &current- electrical junctiontemperature- thermal dissipationEfficacyThe luminous efficacy (lumens/watt) of LEDs vary with color.Currently white LEDs are measuring between 20- 60 lm/W. Thisvariance is subject to differences in chromaticity as well aswattage. The U.S. Department of Energy recently released a studythat estimates efficacy to be 100 lms/W by 2010. By one estimate,replacing the incandescent traffic signals in the United Statesalone with LED signals would save nearly 2.5 billion kWh annually.Red traffic lights, for example, pay back their initial investmentin 2.5 to 3 years through energy savings. Savings due to reducedmaintenance are significant, and can be a leader in cost savingswhen replacement is difficult or expensive.

 

 

Reliability andLumen MaintenanceLumen maintenance is theamount of light emitted from a source at any given time relative tothe light output when the source was first measured. This isusually expressed as a percentage. If you''ve ever changed a lightbulb and noticed how bright a new bulb is when compared with theolder bulb, you''re seeing the effects of lumen depreciation. Thissteady decline over time is known as lumen maintenance (L). Thematerials inside the bulb will continue to deteriorate untilfinally the bulb will no longer emit any light. This is known asthe bulb''s mortality (B). With conventional light sources, thebulb usually fails before our eyes notice the change in lumenmaintenance. LED’s also experience lumendepreciation but it happens over a much longer period of time,usually tens of thousands of hours. Compared to conventional lightsources, you notice very little degradation of light withLED’s. ProductFeatures:1. UnmatchedPrice/Performance Ratio2. Replaces 40 Watttraditional Light bulbs3. Long Life, over 25, 000hours4. Standard A19 form fitsany application 5. Significantly reducesmaintenance costs6. Low wattageconsumption7. Electricity consumptionreduced 80-90%8. Vibration resistant,solid state electronic circuitry9. Internal TVS surgeprotection10. Low heat generationsaves HVAC operating costs11. Warm & Cool Whiteavailable12. 120VAC. standard.240V available (must call)13. Investment paybackwithin 1 year14. Non Dimmable