365nm uv led flashlight UV Professional LED Flashlight The Weltool M2 UV Range “Purple Beard” UV 365nm Professional LED Flashlight. Supplied with Battery & Charger



  • Supplied with battery and charger
  • Useful for; UV curing
  • Forensic investigation & evidence collection
  • Non Destructive Testing (NDT)
  • Leaks detecting
  • Ore exploration
  • Hygiene: Riboflavin validation in pharmaceutical companies
  • Detect the presence of traces of urine from rodents such as rats
  • Inspection of human body fluids
  • Find pet defecations, oil or contaminant in kitchens and bathrooms
  • Check sanitary products, clothing, cosmetics, paper towels with fluoresces



365nm UV led flashlight. Weltool UV Professional LED Flashlight – The Weltool M2-CF “Purple Beard” UV LED Flashlight

The Weltool 365nm UV LED flashlight; M2 UV Professional LED Flashlight is also called black light. It adopts high efficiency pure 365nm UV-A LED with the LED radiation flux of 2100mW. The flashlight body is compact with a steel clip included as an accessory, powered by 1 x Li-ion battery, thus; it is compact and portable.  The M2 Range is supplied WITH battery and WITH charger! All this from the manufacturer of the Weltool W3 and the Weltool W4 LEP Flashlights!

The visible wavelength range to human eye is 400-700 nm, while the dominant wavelength of the M2 flashlight is 365 nm with less visible light; so the M2 is not “bright” in your eyes and it’s not designed for use of illumination. Thus, it proves that it’s a pure 365nm wavelength; with a better performance than the ultraviolet light of other wavelengths (380-400 nm).

An important note to potential buyers and interested parties;

As with all our Flashlights; If you buy this 365nm UV LED flashlight, UV Professional LED Flashlight from China or other countries outside the UK; including sellers on Amazon and eBay residing outside the UK; you will be legally obliged to pay extra customs tax, handling charges and VAT tax charges on, or after delivery to your door! If they don’t ask for payment at your door; the bill will arrive later through your letterbox. Don’t be fooled by lower international prices!

When you buy from Yowcha, an official Weltool UK Stockist; EVERYTHING is included; so NO extra Custom Charges; NO extra handling fees; and NO extra VAT Charges! PLUS; you’ll benefit from Yowcha Sound and Light’s excellent customer service and backup; with access to our out-of-hours telephone number if needed! We take Customer Service and quality of goods seriously as our 2 main criteria’s.

The M2 “Purple Beard” is a professional-grade UV detection flashlight; which is more suitable for professional fields such as;

UV curing:

Some curable adhesives specify the 365nm UV for rapid curing, M2 UV flashlight can also be applied to ink curing field, such as printing, oil painting and wood instrument processing.

Forensic investigation & evidence collection:

Proteinaceous materials emit fluorescence when illuminated by UV light. So M2 can be used to check the body fluid, blood, fingerprint, fiber and also to analyze the bite mark and bruise. UV light usually is used for detection of fraudulent documents such as ID card, visa, passport, credit cards or banknotes. The UV light can be used for arson investigation though the spattering of chemical combustibles and used for car theft forensics by identification of car ID label, and also for vehicle accident analysis.

Non Destructive Testing (NDT):

The M2 UV Professional LED Flashlight is a compact flashlight; especially suitable for on-site fluorescence penetrant testing and fluorescent magnetic particle inspection of special equipment in ships; pressure vessels; draught fan blades and other narrow spaces.

Leak detecting:

By the fluorescence reaction of ethylene glycol in the cooling system, M2 black light can be used to check the leaks of the car radiator and the air-conditioning refrigerant by adding a fluorescent agent. And it works on detecting engine leaks and oil pipeline leaks.

Ore exploration:

Some kinds of ore cannot be quickly identified by the naked eye, but they present various colors under UV beam and can be quickly noticed. It also applies to screening of gems, amber and jade, artifacts, antiques, and discovering traces of fraud and glue.


Riboflavin validation in pharmaceutical companies, inspection of human body fluids and other tissues pollutants in public places, cleaning of oil stain, and the presence of traces of urine from rodents such as rats in the warehouse.


Find pet defecations, oil or contaminant in kitchen and bathroom, check sanitary products, clothing, cosmetics, paper towels with fluorescer.

Outdoor activities:

The outer shell of the scorpion glows under the M2 UV flashlight’s beam, making it easy to find even in the dark. Many mushrooms and flowers, fruits, seeds or some insects, bees, and small crabs are more magical under the illumination of M2 than at night or in daylight.

Weltool M2 series have 3 models: M2-OL (Even-beam), M2-CF (Focused high radiation beam), and M2-BF (Focused pure beam), no matter you are a law enforcement officer, mechanic, engineer, maintenance person or workman, warehouse manager, outdoor enthusiast, laboratory researcher, M2 “Purple Beard” can be a good helper!

3 Different M2 UV Flashlight Models:

First of all, the M2 series of UV lamps use a 365nm wavelength LED, the peak wavelength of this LED is 365nm, but at the same time there is a small amount of light of 360nm or 370nm and 375nm wavelength.

 Weltool M2-OL UV Flashlight:

The M2-OL model uses a glass optical lens, the light spot is rounded, and the radiation intensity difference of each point in the light spot is very small. The radiation intensity of M2-OL is low because of the increased area. So the projection distance is short, but the spot area is large.

Weltool M2-CF UV Flashlight:

The M2-CF uses reflector cups and transparent lenses, the throwing distance is far, the beam is more concentrated, because all the ultraviolet light of 360-370nm will pass through the lens, the radiation intensity of the central spot is high, and the radiation intensity of the floodlight part is low.

Weltool M2-BF UV Flashlight:

The M2-BF is basically the same as M2-CF. The only difference is that M2-BF uses a filter lens. The role of this filter lens is to filter out non-365nm wavelength light, so the light of M2-BF is only 365nm, while the visible light less.

  • Case Material: Aerospace Aluminum Alloy construction; Black anodized finish
  • Reflector: High reflection reflector of aluminium alloy, fits for long-range usage
  • Emitter: High efficiency UV-A LED, peak wavelength of 365nm, continuous lifetime of about 1000 hours
  • Output: According to different production batches, there may be slight differences in parameters, subject to the actual product.


Tested with Weltool UB18-35 Rechargeable Lithium BatteryLow radiant flux modeHigh radiant flux mode
LED Radiant flux:630mW2100mW
Spectral radiosity @38cm(15in):6800μW/cm218200μW/cm2
Irradiated area (round) diameter of distance @ 38cm(15in):20cm
Central beam (round) diameter of distance @ 38cm(15in):6cm
Visible spectrum illuminance distance @ 38cm(15in):≤  64Lux≤  167Lux
Runtime(h): Until radiosity falls to 10%:10h25min4h20min


  • Battery: 1 x 18650 rechargeable Li-ion battery (not included)
  • Switch : Tail cap switch (up to 50,000 presses)
  • No need preheat, press to switch on, reduce the preheat time.
  • 2 adjustable modes, suitable for different usages.
  • Reverse Polarity Protection
  • Over-Discharge Protection
  • Low Voltage Warning
  • Fully regulated output, no PWM, no circuit noise
  • High light transmission tempered glass lens for high spectral radiosity
  • Purple oxidized aluminum alloy protection bezel
  • Anti-slip, anti-roll design
  • 1 meter impact resistance
  • O-ring sealed, IP67 water resistance rating
  • Individually serialized
  • Dimensions: (Bezel Dia.) 27.5mm x (Body Dia.) 23mm x (Length)135mm
  • Weight: 80.5 grams (w/o battery)
  • Accessories (included): O-ring
  • Turn counterclockwise to open the back cover, put the positive terminal of the charged 18650 high-quality lithium-ion battery into the flashlight toward the light head, and then turn clockwise to tighten the tail cover.
  • The flashlight has reverse polarity protection. If the battery is inserted in the wrong direction, the flashlight will not be damaged, but it will not work. If this happens, check the battery.
  • After installing the battery, lightly press (half-press) the tail switch button once to turn on the flashlight and release the switch to turn off. After the flashlight is turned off for more than 10 seconds, the default is low output mode every time it is turned on.
  • When the flashlight is off, continuously lightly press and release the switch, and the flashlight mode will cycle from low to high.
  • When any mode is turned on, press the switch hard (full press), there will be a “click” sound, lock the current brightness is always bright; press again hard, the switch has a “click” sound, the flashlight is turned off.
  • When the battery voltage is too low, the flashlight will flash a warning, please replace with a new battery. After flashing the prompt, the flashlight will automatically turn off at any time to protect the lithium ion battery from excessive discharge.
  • Unauthorized disassembly may damage the flashlight and void the warranty.
  • Weltool “Total Heat Dissipation” technology will dissipate the internal heat of the light during operation, it is normal to feel the flashlight body temperature rise.
  • Please check and replace the O-ring regularly to maintain the waterproof rating.
  • Please check and lubricate the threads regularly with professional lubricant.
  • Clean the contact surfaces regularly to keep the flashlight normal operation.  If irregular strobe or failure to turn-on occurs, the contact surfaces may be dirty and requires cleaning by using alcohol cotton swabs.Remove the battery from the flashlight during long term storage.
  • This flashlight is not intended to be used as a diving light.
  • Do not aim the flashlight directly at eyes. Keep out of the reach of children.


Warning: This product is suitable for professional use. Do not use this Weltool 365nm UV LED flashlight to illuminate the human body. Do not illuminate eyes or expose to skin for a long time. Don’t illuminate the reflective objects that can be reflected, such as mirror or glass. Please wear professional UV protective glasses and keep away from children!

365nm uv led flashlight UV Professional LED Flashlight The Weltool M2 UV Range "Purple Beard" UV 365nm Professional LED Flashlight. Supplied with Battery & Charger    365nm uv led flashlight UV Professional LED Flashlight The Weltool M2 UV Range "Purple Beard" UV 365nm Professional LED Flashlight. Supplied with Battery & Charger
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Additional information

Weight0.140 kg
Dimensions166 × 94 × 48 mm

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