Light Blocking Stickers,Blackout Sticker for Electronic,2 Sheets Cover White and Black, LED Covers,100% Blocking(Cut-100% Blocking White and Black)

I bought these to cover some LEDs on my keyboard that were annoying and couldn't be turned off. These are super easy to use and come cut in all sorts of shapes and sizes and then can also be cut to suit your needs. The white and the black perform the same, but do note that the opposite side of the white sticker is completely black. They completely block light (no bleed at all!) without leaving sticky residue when removed. I think for the price they are of great quality and value.

Got these to use in my baby's nursery in order to cover up lights so he didn't get distracted. Very effective at blocking the lights and I like how you get a black and white option which was helpful for my different light sources.

I thought these would just dim/obscure the light, but still leave LED displays readable; however, they completely block out everything. They do the job, I just have to look at remotes to read the temp setting for my swamp cooler/heater. I'm very sensitive to ambient light and am grateful these work well.

They work as advertised. They are small, but they still fit over most light.

These are okay, but I have had to double or triple up on stickers to actually block the lights on my child's baby monitor. Even with two stickers, we could still see light behind it in a dark room. I do appreciate that there are multiple sizes, so overall these are fine, just know that you will likely need to use a few of them if you want to completely black out a light.

My eyes are very sensitive to the blue lights on electronics, especially at night when I’m trying to sleep. You can still faintly see the light, but the light does not shine at night and keep me from sleeping

Works well. These worked great because we could cut them to size on items that were odd shaped. They dimmed light to a much more reasonable level.

Seem to work great - only complaint is that things are not labelled. Based on another helpful review, I used a flashlight to determine which sheets dimmed light and which blocked it completely. After that I uses the stickers I wanted to on various devices and so far things seem to work ok. Knocked a star off for lack of labeling but as far as function goes, they're 5 stars. I wish it came with larger sheets since now I want to cover more/bigger things, but if you're looking to dim and block light from a variety of devices, this will work for you!