Are these leds common anode or cathode?
1499711
These LED's only have two leads. The longer Lead is the Anode +,and the shorter Lead is the cathode - . Use a 1/2 watt 1k resistor in series with a 12 volt supply. The LED flashes and changes color all on it's own with a built in microchip. It looks like a tiny black speck inside the LED. It has no effect on the brightness. I think these Led's are a great buy for the money. They did not come with 1 k resistors. I forgot what they came with. Important you use 1 (1k ) resistor per LED in series. Look up charts on LED's brightness,current draw , voltage and proper voltage drop resistor for you application. These LED's only have two leads. The longer Lead is the Anode +,and the shorter Lead is the cathode - . Use a 1/2 watt 1k resistor in series with a 12 volt supply. The LED flashes and changes color all on it's own with a built in microchip. It looks like a tiny black speck inside the LED. It has no effect on the brightness. I think these Led's are a great buy for the money. They did not come with 1 k resistors. I forgot what they came with. Important you use 1 (1k ) resistor per LED in series. Look up charts on LED's brightness,current draw , voltage and proper voltage drop resistor for you... » Read More These LED's only have two leads. The longer Lead is the Anode +,and the shorter Lead is the cathode - . Use a 1/2 watt 1k resistor in series with a 12 volt supply. The LED flashes and changes color all on it's own with a built in microchip. It looks like a tiny black speck inside the LED. It has no effect on the brightness. I think these Led's are a great buy for the money. They did not come with 1 k resistors. I forgot what they came with. Important you use 1 (1k ) resistor per LED in series. Look up charts on LED's brightness,current draw , voltage and proper voltage drop resistor for you application. « Show Less
1499712
Neither, they only have two leads and all color changing is preprogrammed and is not adjustable.
843405
These are automobile bulbs, 12 volt, notice the little knobs at the bottom on the metal base, some have the knobs opposite at the same level, the other are opposite but one is a little higher than the other. Also there are different color for the light emitted, some are more a yellow light like the incandescent lights, some are the bright whitish blue led. Do you home work. they are very worth the investment.
1863293
White - they are standard white LEDs. They look like the bright white compact florescent bulbs, NOT like the warm yellow florescent ones.
1482498
Not sure but most of the diodes that run these things are one way only. Best case, it will not light. Worst case, it will not light ever again. Call the seller to be sure. They should know.
379011
I do not recall; however, I am well pleased with the brightness. I've used other leds that were very disappointing.
449850
These are a little bluish, maybe around what you're looking for. I'd guess that they're a little higher than 7000K. Felix is correct that these are very bright when run at ~13.5 to 14.0V, I run mine at 13.8V. Lahiru is dong something wrong. FYI, if your strip is longer than, maybe, 10' I'd run the supply wires to both ends. If I ran the full 30' strip I'd run the supply to both ends and the middle. Why? Because there will be enough of a voltage drop along the copper traces on the strip that the LED's on the end will be noticeably dimmer if you only connect to one end.
1998866
Hi Brandon,Please send us the type or product information on the LED's and we will be able to advise you.
1434997
I'm not sure. However, they immediately burned out my LED flashlight. Not an easy task. I assumed that they would be a perfect replacement for alkaline "C's". I'm guessing that assumption is not a good strategy.
943511
Hi, These are very poor quality LED strip, I just bought there to replaced it. "DC 12V 5M 16.4 ft 300 LED Non Waterproof 5050 SMD Flexible LED Light Lamp Strip 60led/meter (5050, Day White)" !! These are much brighter and the color are daylight where the one you asked are too warm! Also their uniformity are much better, have 3M double sided tape so you can stick it to your tank!!!!
2211810
74 Lumenshttp://www.niteize.com/product/1-Watt-LED-Upgrade-C-D-Cell.asphttp://youtu.be/VjEWLg9tbOw
155186
Neither, These are cold cathode lights for the INSIDE of a Computer Case, They are powered by a 4 Pin Molex Connector
1831414
yes, but last few order from this place have been faulty, they o bad withing a few weeks, switch over to a different supplier which is more for the product but seems to be working good. elemental LED
1906762
I believe those two diodes are at the 730nm point, which is above what most human eyes can react to. This makes the diode look dim or off for most of us. You can get special colored glasses to let you see how bright they are compared to the other diodes.
661133
I was told by a few other owner`s of this unit , that they are like a bic lighter , you are supposed to toss them after they are all burned out , this is why they are so cheap compared to other led set`s , hope this help`s , you should check out the website on the box .
451772
None that I know of. They're all still working, and we'll be buying more to complete our conversion to LEDs.
1782597
My guess is it is both. They are extremely bright compared to plain run of the mill leds.
1982441
No, they are Led. It's hard to know the brand and whether it's Cree or not but I bought two of these, the 3800 and the 1800 and they work very well though one 4-AA battery pack now dies after 40 minutes of use after owning it for 10 months. The other battery pack still last over 80 minutes. I already purchased 4 new rechargeable batteries for $11 and plan to make a longer lasting battery pack.