Using energy-saving LED lamps? You should beware (משתמשים בנורות ה-LED החסכוניות? כדאי שתיזהרו) .

For the most part true

But i question the inclusion of Fluorescent in the claims. The Fluorescent (even 6500K) does not put out as much energy in a single spectral line, so i would question whether its awakening effect is significant. Personally i do feel a difference of magnitude of the effect under LED vs FL

They also included indicator LEDs (The ones that are used in routers) and the red LEDs of optical mouse, and not just bright white LEDs on LCD screen, signs, smart devices and lighting.

NOTE!The "red LED" in an optical mouse is really a low power laser-DO NOT LOOK INTO AN OPTICAL MOUSE LIFTED OFF THE TABLE!The light WILL hurt your eyes.Surprized these don't have laser warning labels.Instead the warning was in the mouse instruction booklet.

The indicators dont have actual effect. Well, i can see a difference between complete darkness vs the lights of indicators, but no difference between indicators vs decaying embers in a fireplace.....which humanity used for thousands of years without any adverse effect

In most types of optical mouse its a plain LED

But i question the inclusion of Fluorescent in the claims. The Fluorescent (even 6500K) does not put out as much energy in a single spectral line, so i would question whether its awakening effect is significant.

For the awakening effect it does not matter, whether all the energy is concentrated within one spectral line, or spread over broad spectrum band in he blue region. The mechanism starts with the eyes seeing the bluish light, brain making non-conscious "conclusions" of you being outside, so vulnerable towards predators and that is, what alters the hormones, so the awakening effect.
So it really depends only on what the eyes see, nothing else. And the eyes do not differ between narrow spike in the spectrum or general blue, what they see is just the color balance over the spectrum.

The blue end of the spectrum from Fluorescent is spread to peaks in colors neighboring with blue, but which are not blue - few shades of violet and green are there too. The green line for example, while it is green, it is in the area of the spectrum to which all 3 cone cells (Shortwave - B, Median - G, and Longwave - G+R) are nearly equally sensitive

That lines which are only near blue, do add to the rendering of colors in the blue region, basically by the fact that reflective surfaces are not perfect "band pass filters" - They do reflect nearby spectral lines as well.  and the rest is composition happening in our mind....

The melatonin related receptor is a band pass filter on its own. With LED, there is one spectral line presumably going down the center of its sensitivity range. With Fluorescent, part of the light which still provides blue color vision, is actually non blue therefore i question how much effect it can have, if it falls on the sides of the range, where sensitivity is lower