what is the lumen output, ULTRA SUN, the seller? DO you know how much your product outputs?
584943
I think the output is about 16,000 lumens -- see ultrasunlamps com --> http://www.ultrasunlamps.com/1798
584944
It may say it puts out 16,000 lumens but the determining factors of how much your plants receive depends how close the light is them... Initial output is 16,000 from the bulb. I do recomend replaceing every 9 months because like all lights these lose thier briteness
434477
The ultra is 500 lumens, this is not an ultra. This light is a old model.The light manufactures are fighting it out for highest lumen output. This is great for out door use but unusable indoors do to bounce back.
1284988
I am pretty sure it is very low, led's don't put out many lumens. Lumens is a measure of light humans see. Par is what plants see. I found a watt to lumen calculator online. Seems to be about 18,000 lumens, From what it says a 300 watt led puts out.
787458
still waiting for the response.... what is the lumens. question 1 didn't provide the answer.
1511512
Maker replied me - it's in 5,000K. It's Kelvin btw. Still no words on lumens though...
2052732
I bought many lights from this guys,they are manufacturer,and have a agent in us, i contact them before for wholesale price. becuase this is a problem on shipping,i leave a message to them, they called me back. so good,i think the warranty is ok.24 Global Market??? I found you guys copy the Greatlux infomation and picture.when i click,i can not find any lisitng from you,How can i trust you???
2032428
I'm not sure of the lumens. I am using them as day time running lights and back up lights.
1735028
It appears to me that the importer is a bit remiss in dealing with the details. In addition to the discrepancy in brightness, he also lists two different wattage ratings. I suspect that he is now selling the 20-watt version of this light, vs. the older 18-watt version, and simply botched the ratings. (1650-lumens)/(18-watts) = 91.7-lumens/watt(1950-lumens)/(20-watts) = 97.5-lumens/wattBoth of these figures are VERY efficient, and replace fluorescent tubes VERY well.
2031990
I am not sure. However, the light appears to put out that much light. It is very bright. So far, the output seems to be appropriate for the claimed amount. My reason is that it compares favorably with a hand held flashlight that puts out 300 lumens. I have several with various outputs. This light is very effective for camping and for emergency lighting.
253755
Amanda, I know that it provides 3780 lumens, however, I do not have any photometric information at this time. That factory is in the process of moving, but if I can get anything further from them I will get back to you. Sorry -- Barry
1619322
It's a little over 100 lumens. Those who wrote 200 and 300, are only comparing output to generic lights that are fraudulently rated higher than their actual output.
2052731
I bought many lights from this guys,they are manufacturer,and have a agent in us, i contact them before for wholesale price. becuase this is a problem on shipping,i leave a message to them, they called me back. so good,i think the warranty is ok. 24 Global Market??? I found you guys copy the Greatlux infomation and picture.when i click,i can not find any lisitng from you,How can i trust you???
1237105
Unfortunately I do not know the answer to this question. And I would add that the light was not as expected product., I thought I would have more light.No part of this product, lumens is not much explanation.
301351
I cant remember if it ever listed lumens brightness on package. But it does light up my 12' x 12' gazebo very well.
576124
Neither the package nor the light itself have any marking for lumens, but it is plenty bright. The nine LEDs are spread over a distance of 6.25 inches and are more than adequate for lighting 2 pages of music in a relatively dark environment. That said, I do not recommend this light. The seller is shipping different lights to different buyers. What I got has different features than some of the reviewers are describing. My light is not rechargeable (unless you provide your own rechargeable batteries and external charger). Also the battery circuit stopped working after six months. Now the light only works from the AC adapter which came with a measly 3' foot cord. Neither the package nor the light itself have any marking for lumens, but it is plenty bright. The nine LEDs are spread over a distance of 6.25 inches and are more than adequate for lighting 2 pages of music in a relatively dark environment. That said, I do not recommend this light. The seller is shipping different lights to different buyers. What I got has different features than some of the reviewers are describing. My light is not rechargeable (unless you provide your own rechargeable batteries and external charger). Also the battery circuit stopped working after six months. Now the... » Read More Neither the package nor the light itself have any marking for lumens, but it is plenty bright. The nine LEDs are spread over a distance of 6.25 inches and are more than adequate for lighting 2 pages of music in a relatively dark environment. That said, I do not recommend this light. The seller is shipping different lights to different buyers. What I got has different features than some of the reviewers are describing. My light is not rechargeable (unless you provide your own rechargeable batteries and external charger). Also the battery circuit stopped working after six months. Now the light only works from the AC adapter which came with a measly 3' foot cord. « Show Less
1878179
74 Lumen Output (Estimated Max Lumen output only. Actual performance depends on operation conditions, cells used and flashlight.)
991600
I can't answer your question, but I can tell you that Lutron customer service is terrific. I've spoke to them twice and they we extremely helpful.