Yes, if the blood stains show a brown fluorescence color under ultraviolet light, it can be judged that there should be blood stains.

How do you get 2 AA batteries in it?

It was powered by 2*AAA batteries.

Can this test uv blocking of sunglasses?

The wavelengths range of the ultraviolet light in the sunlight is 10nm-400nm, this blacklight flashlight is 395nm. You can only use this blacklight fashlight to test if your sunglasses can block 395nm blacklight, for other wavelengths light of UV light, you need other lights.

Has anyone used these to detect Freon leaks ? Do they work for that

Yes, it can detects Freon leaks.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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COSOOS 2 UV Black Light Flashlight, 2 Pack 395nm Mini Pen Light with Clip, Waterproof Ultraviolet Flashlight for Leak, Pet Urine, Scorpion, Hotel Inspection, Dry Stain and Bed Bug.

Product ID: 475927900

Details

Color
Black
Light Source Type
LED
Material
Metal
Power Source
Battery
Special Feature
Lightweight

💧IPX4 water resistance for rugged use

📏Compact 5.5-inch pen size with clip

🔦395nm UV wavelength for invisible detection

MX$579

Duties & taxes included

In stock

Sold byAmazon MexicoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔦 See the unseen, own the moment.

WEATHERPROOF WORKHORSE - IPX4 splash-resistant aluminum body built to perform rain or shine without missing a beat.
POCKET SIZED POWERHOUSE - Ultra-lightweight 1.1oz design with removable metal clip for hands-free convenience anywhere.
SIMPLE NO FUSS OPERATION - One-button on/off powered by common AAA batteries—ready when you are, no tech skills needed.
DUAL PACK DOUBLE THE UTILITY - Two pen lights included—perfect for sharing or doubling your inspection efficiency.
INVISIBLE INSIGHTS INSTANT DETECTION - 395nm UV light reveals stains, scorpions, and counterfeit IDs unseen by the naked eye.

The COSOOS 2 Pack UV Black Light Flashlights feature a powerful 395nm wavelength LED in a compact, lightweight pen design with removable clips. Crafted from durable aluminum with IPX4 water resistance, these flashlights excel at detecting pet stains, counterfeit IDs, scorpions, and more. Powered by 2 AAA batteries each, they offer easy one-button operation and come as a convenient dual pack, making them an essential tool for professionals and pet owners alike.

Specifications

ASIN	B0B92PDCSV
Additional Features	Lightweight
Battery Description	Alkaline
Battery Type	Alkaline
Best Sellers Rank	#3,668 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #11 in Pet Urine Detectors #55 in Handheld Flashlights
Brand Name	COSOOS
Color	Black
Customer Reviews	4.5 out of 5 stars 2,451 Reviews
Finish Types	Smooth Metal
Included Components	2*uv pen light
Item Dimensions D x W x H	5.5"D x 1.1"W x 0.8"H
Item Type Name	2 pack uv pen light
Item Weight	1.1 ounces
Light Source Special Features	395nm wavelength detection
Light Source Type	LED
Manufacturer	COSOOS
Manufacturer Part Number	GFIUFF80y
Material	Metal
Material Type	Metal
Model Number	CS-DZ002-B
Mounting Type	Clip-on Mount
Number of Batteries	2 AAA batteries required.
Number of Items	2
Number of Light Sources	2
Number of Packs	2
Power Source	Battery Powered
Recommended Uses For Product	Pet urine detection, Dry stain identification, Scorpion finding, Fluorescent agent identification, Bathroom and hotel room inspection, Counterfeit currency and fake ID detection, Precious minerals, rocks, or jewelry identification
Set Name	2
Shape	Pen
Size	2 Pack
Special Feature	Lightweight
Style Name	Compact
Unit Count	2 Count
Voltage	3 volts
Water Resistance Level	Water Resistant
White Brightness	50 lumens

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