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LAMBDA'S KEYLIGHT NANO
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Lambda's Keylight Nano, retail $15.00 (www.lambdalights.com...)
Manufactured by K.F. (aka. Lambda) (www.lambdalights.com)
Last updated 05-15-13

The Keylight is a key fob light that allows you to easily find your keys at night or when the power fails.
They're also useful for marking trip lines, tent zippers, climbing ropes, or use as trail markers or on dog collars to keep track of Fido in the dark.

It comes in a thick brass body with a custom-made optic that helps to disperse the light so that it is visible from an extremely wide angle of 360° in the X-axis (horizontally) by approx. 270° in the Y-axis (vertical). It features a single LED driven at approx. 9µA (0.009mA) -- this allows for a battery life of a year or more even on the itsy-bitsy teeny-weenie SR48 button cells it feeds from!

Size of product w/hand to show scale

SIZE

The Keylight is ready to go as soon as you receive it; there are no switches to fuss with or forget, and the batteries can last more than 1 year!

Simply attach it to your keyring using the split ring, already affixed to the tailcap of the Keylight.

To change the power cells in your Keylight, remove the split ring from the product, and set it aside.

Next, remove the "butt plug" from the tailcap; use a knife blade to pry it outward and then use a pair of pliers to grab onto it and finish pulling it straight out. Set that aside as well.

Use a small screwdriver to remove the spring from inside the barrel, set THAT aside as well.

Tip out the 'battery carriage' (a plastic sleeve), and use the business-end of a small screwdriver to push the dead, dead SR48 button cells out (or just s**tcan the whole mess if the cells are taped together). Dispose of or recycle them as you see fit. Do not use your foot to push them under the Lazy-Boy where the family cat might find them, do not attempt to flush them down the loo, and for God sakes please do not throw them over the side of a dock where they might hit a flounder on the way down to the sea bottom.

The parts you should now have (before disposing of the batteries anyway) look like this.

Install two new SR48 silver oxide button cells; make sure to insulate the cells with tape. Note that a great alternative to using tape is a soft drink straw from McDonalds cut to appropriate length. Orient the cells so that the button-ends (-) negatives go in first.

Insert the spring, and use the small screwdriver you originally used to remove it in order to push it all the way down -- if you've done everything correctly up to this point, the unit should now spring to life.

Insert the 'butt plug' into the barrel, orienting it so that the the end closest to the black O-ring goes in first -- but (and now this part is important, so pay attention...I SAID PAY ATTENTION!!!

) -- be certain that the hole in the 'butt plug' is aligned with the hole in the barrel -- use the pliers to turn the 'butt plug' so that the holes are aligned...NOW you can finish pushing it in.

Finally, insert the split ring back in the hole (use the pliers and/or the screwdriver to open it wide enough so that one of its free ends goes in the hole).

This battery changing procedure is somewhat difficult, but take solace in knowing that you only have to do it once a year or so!

This is a glowing key fob, not a flashlight meant to be thrashed, trashed, and abused. So I won't try to drown it in the toliet tank, bash it against a steel rod or against the concrete floor of a carport in effort to try and expose the bare Metalmarineangemon - er - the bare Metalwargrowlmon - um that's not it either...the bare Metaldarktyrannomon...er...uh...wait a sec here...THE BARE METAL (guess I've been watching too much Digimon again!

- now I'm just making {vulgar term for feces} up!!!), let my mother's big dog's ghost, her kitties, my sister's kitty cat, or my own kitty cat piddle (uranate) on it, hose it down with my mother's handgun, run over it with a 450lb Quickie Pulse 6 motorised wheelchair, stomp on it, use a medium ball peen hammer in order to smash it open to check it for candiosity, fire it from the cannoñata, drop it down the top of Mt. Erupto (now I guess I've been watching the TV program "Viva Piñata" too much again

- candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piñata Central {aka. "Party Central"}), with a handheld wand that Langston Lickatoad uses, or with a pack-of-cards-sized device that Fergy Fudgehog uses; the cannoñata (also located at Piñata Central) is only used to shoot piñatas to piñata parties away from picturesque Piñata Island, and Mt. Erupto is an active volcano on Piñata Island), send it to the Daystrom Institute for additional analysis, or perform other indecencies on it that a flashlight might have to have performed on it. Therefore, this section of the Lambda's Keylight Nano's web page will seem a bit more bare than this section of the web page on a page about a flashlight.

Having said that, there ***IS*** an O-ring between the "butt plug" and the barrel; this should help keep nasties like water, diet Diet Berries & Cream Dr. Pecker, bird poop, mud, glycol (from antifreeze), windshield washer fluid, etc. out of the Keylight.

Photograph of all four Lambda's Keylight Nanos illuminated.

Photo of three of the four Keylights sent illuminating white paper positioned under their, "business-ends".

The blue one is not shown here because the battery pack has inexplicably vanished from its barrel!!!.

I'm unsure of just how such a thing could happen; I consider myself to be somewhat of an expert in portable, self-contained light sources and ***I*** had to ask Lamba how to execute a battery change, so I very highly doubt that anybody in this household could've disasembled it, removed the battery pack, then properly reassembled it. And I know with absolute, positive, 100% certainty that it was on when I went to the drug store the other day!!!

Apparently, somebody has some kind of quantum subspace transporter that 'beamed' the battery pack out of the Keylight and to some other location!!!

Photo of all four Keylights that were sent illuminating white paper positioned under their, "business-ends".

The battery pack from the blue one has mysteriously reappeared!!!

Spectrographic analysis of the LED in the red version of this product.

Spectrographic analysis of the LED in the red version of this product; spectrometer's response narrowed to a band between 625nm and 635nm to pinpoint peak wavelength, which is exactly 629.00nm.

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/42/keyred.txt

Spectrographic analysis of the LED in the green version of this product.

Spectrographic analysis of the LED in the green version of this product; spectrometer's response narrowed to a band between 530nm and 540nm to pinpoint peak wavelength, which is 536.130nm.

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/42/keygreen.txt

Spectrographic analysis of the LED in the blue version of this product.

Spectrographic analysis of the LED in the blue version of this product; spectrometer's response narrowed to a band between 465nm and 475nm to pinpoint peak wavelength, which is 468.770nm.

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/42/keyblue.txt

Spectrographic analysis of the LED in the purple version of this product.

Spectrographic analysis of the LED in the purple version of this product; spectrometer's response narrowed to a band between 450nm and 460nm to pinpoint native emission peak wavelength, which is 453.290nm.

Spectrographic analysis of the LED in the purple version of this product; spectrometer's response narrowed to a band between 610nm and 670nm to pinpoint phosphor peak wavelength, which is 644.880nm.

The raw spectrometer data (comma-delimited that can be loaded into Excel) is at http://ledmuseum.candlepower.us/42/keypur.txt

USB2000 Spectrometer graciously donated by P.L.

TEST NOTES:
Test sample of these units (four of them in different colors) were sent by K.F. aka. Lambda of www.lambdalights.com on 05-05-13 (or "2013 05 May" or even "May 05, Twenty-Stick-Boobs" if you prefer) and was received at 5:09pm PDT on 05-08-13.

UPDATE: 00-00-00

PROS:
Totally unique product
Very durable construction for a key fob light

NEUTRAL:
Battery change (difficult) only needs to be performed once a year
Batteries are cheap if you purchase them from Lambda's website

CONS:
Batteries it uses could be locally expen$ive and/or difficult to locate -- that's what nocked off ½ star (they're cheap if you purchase them from Lambda's website!)
Battery changing procedure is somewhat difficult -- that's what took out the other ½ star

Lambda Lights

Glowing key fob

3mm LED

Extremely wide-angle torroidal configuration (X=360°, Y=~270°)

N/A

Metal with plastic piece on business-end

Transparent plastic piece to protect LED

2x SR48 silver oxide button cells

Unknown/unable to measure

Yes

¡¡¡HUSOOS CRISTO USANDO UN ANDADOR NO!!!

2x SR48 silver oxide button cells, split ring

42mm L x 9mm Dia.

11.60g (0.41 oz.) incl. batteries

USA

1 year

Lambda's Keylight Nano * www.lambdalights.com/keylight.html

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