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365nm High-Powered LED Retrofit, retail $300.00 (www.inretech.net)
Manufactured by InReTECH (www.inretech.net)
Last updated 05-27-09

The 365nm High-Powered LED Retrofit is a ***VERY*** high output UVA (ultraviolet type A) portable radiation source built using a Mag-Lite body and a thick aluminum slug outfitted with a 365nm high-powered UV LED. The unit is designed to operate at maximum output with no regards for battery life.

You must already own a 3xD Mag; the 365nm High-Powered LED Retrofit does not come with one.

Regarding the two photographs above: the first one is of the module itself, and the second is of the finished radiation source.

The UV LED in this product produces SIGNIFICANT amounts of UVA radiation, which is ***NOT AT ALL*** good for your eyes. DO NOT stare into this radiation source at all - not even for a second!!! You only come with one set of eyeballs, and if you ruin them, you can't just go to the local 7-11 for some "Eyeballs-In-A-Can" and pop some new ones in. In another 1,000 years maybe, but not now.


This retrofit requires you to have a 3xD cell Mag-Lite.
To install this retrofit, just follow the easy instructions directly below:
  1. Unscrew the head, and set it aside.
  2. Unscrew the collar that holds the light bulb in (as you would for replacing the bulb), and remove the bulb. Do not replace the collar you took off when you removed the old bulb. Throw the collar & bulb in a drawer or somewhere else you can find them in case you ever want to go back to a regular bulb.
  3. Screw the head assembly back onto the Mag's body.
  4. Now, unscrew the TOP of the head (this is the lens retaining ring), from the main part of the head assembly as you would do to change the lens.
  5. Dump out the lens, and place it in the same drawer as the bulb collar & bulb
  6. Remove the reflector (throw it in the same drawer as the bulb collar, bulb, and lens).
  7. Put the 365nm High-Powered LED Retrofit module in the opening, and screw it into the bulb holder (clockwise) until it stops turning. DO NOT use the LED as a "grip point" while turning - it may become broken if you do!!! Use the lens holder on the module for this purpose. Make sure its just "finger tight" and no more
  8. Holding the flashlight upright, carefully screw the top of the head assembly (without the flashlight's lens!) back onto the bottom of the head assembly.
  9. Affix supplied warning label to flashlight.
  10. No more. There. Done.
Tighten the focus ring of the radiation source (the Mag-Lite host body) all the way down and ***NEVER*** attempt to focus the radiation source!!!

To refill the 365nm High-Powered LED Retrofit, unscrew & remove the tailcap, gently place it on the ground, and kick it into the garden so the hungry, hungry praying mantids will think it's something yummy to eat and subsequently strike at it...O WAIT!!! YOU'LL NEED THAT!!! So just set it aside instead.

Dump the dead D cells out of the barrel and throw them into a large, extra-heavy-duty garbage can (plastic OR metal) and kiss their sorry butts goodbye (we don't have a battery reclamation program here in California - please recycle them if you do).
Be sure you empty that garbage can every now and again; you don't want baby spiders or Io moth larvae.

Slide three new D cells into the barrel with the button-end (+) positive going in first.

Screw the tailcap firmly back on, and go about your business.
Aren't you glad you didn't kick that tailcap into the garden with all those hungry, hungry praying mantids now?

Here is what a praying mantis looks like.
I found this guy on the morning of 09-08-06 clinging to the basket of my scooter.

Measures 661mA on my DMM's 4A scale.
Known-new store brand brand alkaline cells were used for this test.

As a retrofit, it appears to have been professionally assembled. The LED is mounted in a commercial-looking round PCB, and a very thick and heavy aluminum slug on the bottom provides heat sinking for the LED. The PCB has one 365nm high-powered UV LED emitter on it.

As a portable UVA radiation source, the unit is sturdy, and is of a proven physical design. Mag Instruments (of which InReTECH has *no* affiliation!) has been making flashlights for years, and they have a long track record for durability. This LED module appears that it should live up to those standards, and allow you to get many more useful years out of your Mag-Lite.

Because there is no end-window ("lens"), you should make every effort not to stand this light on its bezel (head); this should help keep the optic clean and free of scratches.

As I understand, the high-powered UV LED is Nichia in origin.

Here is a photograph showing the optic of the 365nm High-Powered LED Retrofit.

Beam photograph on the test target at 12".

The bright blue glow you see is ***MAINLY*** a camera trick; the sensors
in digital cameras do not do well with short wavelengths.
Residual fluorescence is coming from the paper itself.

To the unaided eye, the light has a very dim, whitish-violet appearance.

Beam photograph on a nonreactive surface at 12".

Photograph of the security strip in a $5 bill fluorescing (glowing).

Photograph of the security strip in a $20 bill fluorescing (glowing).

Photograph of fluorecence (glowing) in a Team Edge remote control.

Photograph of fluorecence from a "blacklight" pen (top) and some "blacklight" paint (bottom).

Photograph showing how it finds cat pee on the rug.
Yes folks, this is real cat pee.

Photograph showing acrylic plastic pieces (not at all dissimilar to coolant system dye) fluorescing.

Photograph showing transparent, water-clear map pins fluorescing.

Photograph showing the protective plastic over the cap of a new bottle of Listerine® brand mouthdouche fluorescing.

Photograph of fluorescent rocks & Vaseline glass marbles...what else...fluorescing!
Product's main beam was directed well above the objects in this photograph.
Fluorescent minerals can be found at CoolWorldMinerals.

Spectrographic plot
Spectrographic analysis of the LED in the 365nm High-Powered LED Retrofit.

Spectrographic plot
Same as above, with spectrometer's response narrowed to a range of 360nm to 380nm.
Peak wavelength appears to be 368.6nm.
The generally-accepted tolerance for LEDs in this wavelength range is +-10nm, so this LED is
at the upper end of the specified wavelength; though well within specifications.

Spectrographic plot
Same as above, with new spectrometer software setting used.
Spectrometer's response narrowed to a range of 350nm to 400nm.

USB2000 spectrometer graciously donated by P.L.

ProMetric analysis
Beam cross-sectional analysis.
Image made using the ProMetric System by Radiant Imaging.

WMP movie (.avi extension) showing this unit spinning the vanes of a radiometer.
This clip is approximately 2.9 megabytes (3,091,880 bytes) in length; dial-up users please be aware.
It will take no less than eleven minutes to load at 48.0Kbps.

Test unit was sent by Mike Boyd, and was received on 10-26-07.

Product was made in the United States. A product's country of origin really does matter to some people, which is why I published it on this web page.

Mike Boyd (the creator of this amazing light) can be reached at inretech@yahoo.com if necessary.

UPDATE: 11-03-07
This makes a superb "cat pee detector" - it found evidence of cat urnie on the rug in front of the TV set; and it found the pee rather handily too.

UPDATE: 11-12-07
The more I use this adapter, the more I like it.
It simply blows all other 365nm adapters clean out of the water as it were.
The only thing that's going to prevent it being rated a full five stars is that the Mag Lite's (or a third party's) window (lens) cannot be used; opening up the possibility of damage (becoming scratched or even broken) if the unit is repeatedly set face-down or is carelessly stored in a toolbox with lots of tools, loose screws, and other small, relatively sharp objects. This also means that water-resistance is rather minimal. But if it's used primarily indoors (or outdoors in fair weather only) and is stored with at least a modicum of care, this is a truly fantastic product!!!

UPDATE: 02-06-08
One of the kitty cats peed in the bathtub overnight; so of course I whipped out my handy-dandy "cat pee detector" (this product) and a camera and dutifully photographed the pee before douching out the bathtub.

UPDATE: 02-27-08
One of the kitty cats pissed in the bathtub again yesterday morning (I think I know which one did the deed, but I won't knark on him!); so of course I once again whipped out my handy-dandy "cat pee detector" (this product) and a camera and dutifully photographed the pee before douching out the bathtub.

UPDATE: 07-01-08
I bleached my hair several days ago (using a Miss Clairol Blonding Kit); I was curious to know if it fluoresced at all or not...here, you be the judge:

UPDATE: 05-01-09
I detected the distinct odour of cat pee when I left my room yesterday morning, so I reached for my handy-dandy "cat pee detector" (this product) shortly thereafter to search for the source...although I did not find it, I ***DID*** find quite a few old (dried) cat piss marks on the rug - urine spots I did not even know were there.

Uses a host body that's relatively inexpensive and easily available
Uses batteries that are common and relatively inexpensive
Reasonably durable (as a finished product)
Easily the most powerful portable 365nm UVA source on the market

No end window (lens) means the optic on this adapter could be vulnerable to damage from rough handling or improper storage

    PRODUCT TYPE: Drop-in adapter for 3xD Mag-Lite
    LAMP TYPE: 365nm high-powered UV LED
    No. OF LAMPS: 1
    BEAM TYPE: Medium spot w/wide corona
    SWITCH TYPE: Pushbutton momentary/on/off on side of barrel
    CASE MATERIAL: Aluminum
    BEZEL: Metal; LED protected by optic
    BATTERY: 3xD cells
    WATER RESISTANT: Light sprinkle-resistance at maximum
    ACCESSORIES: UV warning label
    WARRANTY: 1 year


    Star RatingStar Rating

365nm High-Powered LED Retrofit* www.inretech.net

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