BruceMardle
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100шт 5мм круглый фиолетовый UV LED диод супер яркая вода прозрачная Светодиодный Лампа фиолетовый цвет
US$2.99 US$8.99

Q: What is the wavelength of these UV leds?

Задавает BG183915105 на 2021-10-03 16:16:37

BruceMardle I haven't actually tested it, but the product description says 405 nanometres. That sounds right, comparing it with my 405nm laser pointer. The light looks pretty dim but it's not entirely invisible. (It makes a lot of things fluoresce blue, which can be confusing!)

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Красная головка 5V фокуса Лазер модуля 5мВ 650нм Лазер регулируемая промышленная
US$10.99 US$13.99

Q: Does this do line or cross or selectable? How do you choose between line and cross?

Задавает Craig Shaw на 2021-01-23 09:06:06

BruceMardle The line laser and the cross laser are 2 separate products (though the cross laser is out of stock as I write this).

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Красная головка 5V фокуса Лазер модуля 5мВ 650нм Лазер регулируемая промышленная
US$10.99 US$13.99

Q: Hi Do you sell something to step down either 1 of the following power sources 4xAA, 4AA or 5V 1.5A Power Bank down to the 5mW and max wattage that your diode requires?

Задавает BG436471841 на 2021-04-07 03:39:09

BruceMardle The 5mW refers to the light output, not the electrical input. Anywhere between 3V and 6V input should work. (I'm not sure if the output is higher at higher input voltages. I don't have mine with me to test.)

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