MONEY DETECT LIGHT

Money Detect Light, retail $3.98
Manufactured by (Not stated)
Last updated 11-12-07




This is another in a widespread proliferation of ultraviolet and near-ultraviolet (NUV) "money detector" lights. This model has a 405nm 5mm NUV LED in it, and an aluminum body containing four LR41 button cells powers that LED.

It comes equipped with a spring-loaded "lobster claw" type keyring attachment; this makes it easy and trouble-free to carry around and have with you at all times when you're away from home - assuming of course, you remembered to bring your keys with you.

Its primary purpose is to check paper currency for the UVA-sensitive anticounterfeiting devices concealed within it.


SIZE



This light is ready to use as soon as you remove it from the package.

Press and hold in the button on the side of the barrel to turn the light on and keep it on for as long as you need. Release the button to turn it off.

Tte product comes equipped with a spring-loaded "lobster claw" type keyring attachment; you can easily clip it to and remove it from your keychain without fumbling with all those jangling keys.



To change the batteries in this light, unscrew the two halves of the light (holding the portion with the switch and LED so the LED is pointed at the floor), and set the rear portion aside.

Tip the barrel into your hand or over a garbage can or a recycle box, and get rid of the four dead LR41 cells inside there.

Stack three of the four new LR41 cells onto a table or other flat surface, button-side (-) facing up. Lower the light's front half over them, and slide the now-full barrel to the edge of the table and into your hand (don't let all those batteries fall out and go all over the floor!), and then turn the light so the open end of the barrel is now facing up and the LED is facing down. Lay the fourth LR41 cell on top of the others, so the button-side (-) negative faces down.

Screw the rear half of the unit back on, and be done with it. Check the light to be sure it works; if it doesn't, you probably got one or more of the cells in there backward.

Unable to measure current usage due to how the product was constructed.



These lights are reasonably durable, but not HIGHLY durable. And they're not very waterproof, so please try to keep them out of sinks, toilets, fishtanks, snowbanks, or other places where water might be found. If it gets wet inside, take it apart and let the pieces dry in a warm, dry place for a day or so.

The LED in these lights appears to emit a peak wavelength of approximately 405nm; I might have preferred an LED with a peak emission wavelength of 395nm or lower.
That's why you don't see a "money shot" here - not because I'm broke, but because the LED's emission wavelength is a bit too long to illuminate the anticounterfeiting strip in $20 and $50 bills well enough to photograph that show the strip fluorescing.



Beam photo at ~12".
UV output is too low in wavelength to be measured.

Photograph shows a bright magenta color that does not actually exist.
To the eye, the product's light beam has a deep royal purple color to it.



Photograph of the three uranium glass orbs that were furnished with the flashlights.


Spectrographic plot
Spectrographic analysis of the LED in this flashlight.



TEST NOTES:
Test units (three of them) were purchased on Ebay on 08-05-05, and were received on the afternoon of 08-15-05.

Flashlights were made in China. A product's country of origin really does matter to some people, which is why I published it on this web page.


UPDATE: 00-00-00



PROS:



CONS:



    MANUFACTURER: Unknown
    PRODUCT TYPE: Keychain "money detector"
    LAMP TYPE: 5mm NUV LED
    No. OF LAMPS: 1
    BEAM TYPE: Wide spot with slightly dimmer corona
    SWITCH TYPE: Pushbutton momentary on/off on barrel
    BEZEL: None
    BATTERY: 4xLR41 button cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER RESISTANT: Splatter-resistant at maximum
    SUBMERSIBLE: No
    ACCESSORIES: 8xLR41 button cells, spring-loaded "lobster claw" clasp
    WARRANTY: Unknown/not stated

    PRODUCT RATING:

    Star Rating





Money Detect Light *






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