Nuanchu Light Blocking Tape 2'' x 82 ft 100% Full Black Out Masking Tape for Electronics,Cover LED Indicator, Shielding Glare, Window Shading, Lamp Strips Shade, Backlight Sheet Dimming(1.2'' Wide)

This tape does exactly what I needed, blocks out all the little lights from electronics in my bedroom. It sticks well and makes a big difference in keeping the room dark for better sleep. Simple but really effective.

Blocks out light 100%. Nothing makes it through the tape.Useful on all the LEDs that light up the room at night

Good tape for LEDS that are too bright as well as my light sources

When replacing the screen on an SLA printer, complete blackout tape is needed as light pollution would cause the UV resin to cure. This works great as in 3 months i've had no resin curing around the edges of LCD, meaning it fully blocks the light and works over time.It's also still adhered fine and overall seems to be pretty useful

Great blocking of light

yes

This tape was great for blacking out the sides of our velux blinds

Will absolutely ruin your windows