20pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm

20pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm

$ 8.49

Score By Feature

Based on 46 ratings

Giftable

8.56

Satisfaction

8.85

Packaging

8.62

Delivery

8.98

OveReview Final Score

How Our Score Is Calculated

Product Description

application] Level instrument, ground instrument, electric toys, long-distance laser wireless communication, stage light, flashlight, laser gyro, laser pointer, electric games, industrial applications. The like.

[Working Temperature] -25°C to 65 °C Spot angle +5°.

[Wires] Red wire connects to the positive, Blue wire connects to the negative

[Wavelength] 650nm [Voltage]

From 3-10 mw.

Questions & Answers

What do you consider to be class 1 and class 1M?

There is not a 1 or a 3B is the answer. During use of the laser, do not expose people to its radiation, and do not look at the laser with your naked eye

Selected User Reviews For 20pcs 5V 650nm 5mW Red Dot Laser Head Red Laser Diode Laser Tube with Leads Head Outer Diameter 6mm

A better set of specifications is required

5/5

While the laser diodes work fine, there is no information on the electrical specifications. A couple of years ago, I bought 100 pieces of current-limiting resistors and discovered that their laser diodes came with a 91-ohm resistor. Since I selected a higher limiting resistor, I had to make adjustments to get the same output, but with less power. There was no mention that the diffuser lens was removable in the specs. When I installed the lenses, some of the caps were loose, which I noticed when I installed them. We removed the lens cap and found a spring within. So play it safe and check the lens caps for tightness.

Addison NORTH

| Nov 23, 2020

There is a thread lock on the lens caps

3/5

There is no way to adjust the focus! All of my ones have been locked with thread locker despite the fact that the focus on these is supposed to be adjustable. My attempt to adjust it broke one of them. Due to some genius' decision to lock the focus on the diodes, now I have 19 diodes that are completely useless to me. A Mention OF THIS SHOULD HAVE Been Made in the item description!.

Jonas Knapp

| Jul 11, 2021

An incorrect alignment of the laser with the housing has been identified

3/5

An incorrect alignment of the laser beam with the housing is evident. As a result of this, if the cylindrical housing is placed in a hole, the laser beam does not point with respect to the axis of the hole, but is instead skew to it. You can rotate the laser housing to move the laser spot in a circle. If your laser beam needs to remain aligned with or perpendicular to some reference, this is not a good choice. I have tried four so far, and all have worked. The only problem, they are very inexpensive.

Lauryn Fowler

| Oct 23, 2020

The lenses work, but everything else is lousy

3/5

Even ignoring the alignment issue, which is my concern here, we can see in a number of the modules that the lasers are causing the lenses to flare badly.