Can it be used to safely cover windows, skylights, etc?

it is used to secure the blackout paper you put on windows. Tape alone won't cover

Does this tape have a matt or a shiny, reflective surface?

Somewhat shiny but not what I'd call glossy. similar to electrical tape, but it's thinner and stiffer so a little more crinkly.

does this work to block out light on smoke alarms?

That is what I used it for, and it worked. I put white electrical tape over it for aesthetic reasons.

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Description

🖤 Seal the light, own the night.

PRIVACY ON YOUR TERMS - Shield your devices and spaces from prying eyes with stealthy coverage.
BUILT TO BRAVE ANY CLIMATE - Heat-resistant and waterproof for reliable performance indoors and outdoors.
ULTRA THIN ULTRA EFFECTIVE - Specially processed black surface for maximum opacity without bulk.
VERSATILE APPLICATION MASTER - Easily cuts and sticks to glass, metal, plastic, fabric, and more.
TOTAL DARKNESS ZERO DISTRACTION - Blocks 100% of light to eliminate glare and unwanted illumination.

ANGKEEL Blackout Tape is a professional-grade, ultra-thin PET tape designed to block 100% of light with superior heat resistance (-10°C to 100°C), waterproofing, and anti-UV properties. Perfect for eliminating glare on LCDs, covering LED indicators, enhancing privacy on devices, and insulating windows or gaps, this 90-foot roll offers versatile, durable light-blocking solutions for home, office, and automotive use.

Specifications

Brand	ANGKEEL
Colour	black
Material	Stainless Steel
Number of Items	1
Recommended Uses For Product	Light Blocking, Indicator Covering, Aquarium Background, Privacy Protection, Electrical Insulation
Special Feature	Blocking100% of Light, High Masking, Insulation, Waterproof, Heat Resistant, Anti-UV, Anti-oxidation.
Product Dimensions	20.12L x 0.03W Meters
Surface Recommendation	Window
Water Resistance Level	Waterproof
Size	90 feet x 1.2 inch
Compatible Material	Vinyl
Manufacturer	ANGKEEL
UPC	046432534287
Country of Origin	USA
Item Weight	130 g
Item part number	BL4000
Are batteries included?	No

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