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led lumen 20w

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led lumen 20w Customers Reviews

  • focused one point, warm.

    posted by ghandiano

    Very good if you want to illuminate a holley, or to a long distance because the light is very focussed in one point
    Very brigt, great to work because tou have a focussed high power lamp that does not tur too much heat like an halogen lamp, so you can took it with your hands directly
  • Best

    posted by rogen

    Came to light long-awaited video for photo and video - Valle. As always, the site is very well pleased with the product and made a complete set. A distinctive feature of this model are - light weight, compact dimensions and of course lumen output.  Now more: Valle has two super-bright LEDs, each output of 1000 Lumina, which claimed a total of 2000 Lumina.  Each LED is put on a good Aluminum radiator, which in turn fit snugly to the body of the lamp (thereby diverting heat) and ventilated through the ventilation holes.  Each LED turns on his big switch, which is very easy to find at the top of the WALL.  Nearby is a large green button to view the remainder of the charge akkumulyutora, which appears small scale Svetikov on the back side lantern. Next to this are two small scale but high buttons for the power flux "=" and "+" control is 7 degrees and decreasing power comes barely audible squeak, recalling the reduced capacity. After turning the power plant remains Valle (very good), and the squeak helps not to forget about it.  The angle of the luminous flux is 80 degrees, it's on so much that from 2 meters can cover man to his full height, as a consequence - the power of light from a distance does not get lost in the shuffle. < img src = "http://images.mysku.ru/uploads/images/00/30/46/2012/01/15/335bd5.jpg" alt = "" />  On the edge of the luminous flux, which incidentally has a temperature of 5600, is a very thin halo of yellow-green to the contrary color, it is very noticeable at close range, but with a 2 meter dissipates and ceases to affect the image.  In combination with a lantern is charging, an adapter with Euro plug (sooo bad)  Power Adapter for charging from a car  and stand Valle 4 rubber dots on the edges of the slip.  Also included is a 7.2 volt battery in 2600 from the company SONY miliamper.  Grabbing a must for 2-3 hours, but I was pleased that he had been clinging to old-style batteries with higher capacity and very cheap.    Site and mechanism of attachment made very soundly, the retainer ring imeeet one large groove for better fixation of a finger.
    Most likely will order his second.
    By the way on the website of the manufacturer of the device, its value amounts to only 10 buoys is less reason to change I do not see the provider
  • Very Bright/warm color, poor temperature tolerance

    posted by DrBlood

    I do like the LEDs size and colour, it's pretty awesome, and could reccomend it if you baby it and keep it fan cooled to oh, below about 70 maybe.It's very bright and has a nice warm colour temp, slightly pinkish and a little yellow at the edges of the light spill.
    All modern LEDs are rated to over 110degrees C and 'should' be fine operating up to 120+ deg c, with a manageable loss of luminous efficacy, perhaps 20-30 %.I used a very large 'pin fin' heatsink i took off a northbridge on an old motherboard,This heatsink is easily able to handle the heat this LED generated, but i did have a problem with this LED anyway.NOTE - an LEDs rating in Watts is it's total power dissipation, NOT its 'Heat output rating'.So a 20W LED will generate less than 20W of heat.LEDs that have a luminous efficiency of 100lm/watt have a power/lumen efficiency of about 15%, so20W - (0.15x20W) = 17W of energy not used to create light, ie HEAT.This LED isn't quite that good, so it will be about 18W of heat to dissipate.
    It still works, its just ugly and dissapointing, i may return it or reseat the lens with the real adhesive, we'll see.BTW - LED lighting is my profession so i love playing with and testing these things, especially as they cost just pocket money from DX.
  • Very good LED

    posted by elektronik

    That LED is very good, i use it to lit a room when i am on computer.In combination with driver SKU: 132974 it is great combination.With little conversion of the power unit you get dimmable LED. It says more in coments of LED driver.LED driver uses maximum of 20W power, i measured.
    If you need to lit the room just buy it.
    it's the same price as 10W LED, so buy that 20W.
  • Cheap and extreme bright light!

    posted by Perkelehnet

    The light is incredibly bright! I was shocked when I first plugged in the LED Driver (not included)
    It's big, wich was unexpected, but still good.
    I'm going to use this LED outdoor, outside of my garage. Connected to a motion detector, it'll turn on when I arrive with my car, and light up the area. Perfect, I assume :-D
    I bought the LED Driver (sku.42741) for this item, and it fits perfectly.
    Incredibly bright, I have to say it again..
    Including LED Driver and heatsink, you'll get a BRIGHT LED-light for under 30$!


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