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led module 30w

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led module 30w Customers Reviews

  • Red and blue light, perfect for plants growing

    posted by mingos3

    Works great.A lot of lightLow consumptionRed and blue light wich is the best color spectrum to assimilate chlorophyllVery lightweyght
    The item has 4 screw holes and 2 holes more, I suppose that the 2 extra holes are to connect the cablesThe back side is coated with copper
    Bright light but so much concentrated at a given point. Useful color light: blue and red color (460 nm and 680 nm ) have the appropiate wave lenght to be absorbed for the plants
  • Great Light

    posted by cozzycovers

    This light is extremely bright.The build quality is solid.Wavelength most likely around 635.It's must be at least 2000lm (I'm sure its more). Though you have to take into account Lumen is not the right measurement for red light.
    This driver works well with the light and stays cool: 156230. I used this reflector but your going to have to cut off 2 of the guides (not hard) 39963. I also used this lens works great if you need to focus the light it has a large spread:13569. The labeling on the package says 625 to 635 I think. the color is a orange red. but for sure more red than orange. Which makes me think it could be 625-635nm. I got this as a joke for a back light on a bike but its even too bright for that. Don't Look into the light!
    Get this if you want a super bright red light and very low energy. This is not a blood red, its has more orange.
  • Huge light output for its size

    posted by BjornR1989

    + Very high light output, comparable to a 500W halogen bulb+ More energy efficient than halogen lamps with similar light output+ True cold white light+ Compact design
    When in doubt what the correct polarity is, a regular multimeter switched to diode measurement mode will not be sufficient to test the polarity since the module consists of many light emitting diodes in series. The voltage drop simply is too high.Use a current limited bench supply and slowly turn up the voltage.I sure hope it'll outlast multiple regular light bulbs.
    Lots of light at a reasonable price. Just make sure to choose the right constant current power supply.

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