Motion-Sensing Deck Light, retail $34.99 (
Manufactured by Jenesis International (
Last updated 08-22-12

The Motion-Sensing Deck Light is a new technological advancement on a product that's otherwise quite mundane. It marks things like outdoor decks, outdoor stairs & paths, deck rails, walls, corners, etc. with a faint glow coming from it at night; and more importantly, the LED on its underside (with two intensity settings) lets you actually ***SEE*** stairs, paths, deck surfaces, etc. by automatically brightening when it senses your approach.

It's photosensitive, meaning that it does not just blaze away 24/7; it only comes on when it gets dark and turns off when it gets light.

This faint glow emenating from the front and underside of the product, called Low Glow, is intended to be used as a guide light only; it is far too dim to be used for reading or for any other task that you might use a flashlight for.
If you need a flashlight, then buy a flashlight for heaven sakes!!!

When the unit senses motion (usually from somebody approaching), it brightens dramatically. The angle of the motion sensor's effectiveness is 160° and its range (how far it will sense motion and subsequently brighten) is 30 feet.

Low Glow can make those C cells (or, "batteries" if you prefer to be incorrect ) last up to two full years. That's right, I said, "YEARS" here folks!

 Size of product w/hand to show scale SIZE

To use your shiny new (or corroded old ) Motion-Sensing Deck Light, feed it first (see directly below) and THEN you can go and ***NOT*** fall off the deck at night because you didn't see the edge in the dark.

Mount the bracket (with its 'UP' embossing closest to the top of course) using the furnished screws.

Line up the "keyhole" slots in the bracket with the plastic & metal "tits" on the back of the unit itself, gently press them together, and slide the unit downward for a short distance (est. ~¾ to 1 inch) until it stops -- and there, all done!

If you wish to add security (to make the Motion Deck Light very difficult for a thief to remove in a hurry), you should drive that third screw into that opening in the base of the unit (toward the back and centered left-to-right) and subsequently, into the object you mounted the Motion Deck Light onto in the first place.

The unit turns on automatically at dusk and turns off automatically at dawn; no switches to fuss with or forget!

There are two switches on the underside of the unit that you can set for two intensity levels and two "on-time" wit is the following photo:

On the left in this picture you'll see a switch with "HIGH" and "LOW" embossed next to it, and on the right you'll see a switch with "LONG" and "SHORT" embossed next to it.

It is suggested that for paths and walkways that you set these switches to "HIGH" and "SHORT"; but for living areas like decks, lawns, patios, etc. they should be set to their "LOW" and "LONG" positions.

To change the C cells in your Motion-Sensing Deck Light (presuming that you have it already mounted somewhere), lift upward on the unit until it slides approx. ¾ to 1 inch until it stops, and pull it straight off. Look at it all wierd, cock your head at it like a puppy that doesn't understand what it had just been told, and huck it into your garden with all of those stinkbugs so that the bugs become all pissed off at it and attempt to kill it with their foul odour...O WAIT!!! THAT'S ACTUALLY THE ENTIRE DECK LIGHT YOU JUST CHUCKED!!! So just hang onto it for a moment there cowboy!!!

On the back of the unit, you'll see a battery door pretty much in the center of the unit, Unclip it (between the two "tits" you see), swing it away, remove it, and huck that into the mean, SET IT ASIDE as well.

Remove the three used C cells from the battery compartment, and dispose of or recycle them as you see fit. Do not attempt to dispose of them by flushing, and for Christ sakes please do not lob them over the side of your deck and into that pond with all of those nice lily pads, the giant waterbugs, the ducks floating gracefully by, or the dragonfly nymphs (larvae) in it!

Load three new C cells into the compartment, orienting each one so that its flat-end (-) negative faces a spring for it in each chamber.

Clip the battery door back in place, and drop it back onto the mounting bracket like I described in the, "HOW TO USE" section directly above This battery changing procedure actually sounds a bit more difficult by reading it than it is to actually do it!

Aren't you glad you didn't huck the unit into the garden with all of those pissed off stinkbugs with full charges of their stink glands now?

This is a deck marker with a motion-sensing bright downlight, 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 Metalmegablacktyrannomon - er - the bare Metallilymon - um that's not it either...the bare 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!!! The product isn't even made of metal to begin with, so what was I thinking?!?), 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 Motion-Sensing Deck Light's web page will seem a bit more bare than this section of the web page on a page about a flashlight.

The unit is advertised as "weatherised", however I found no O-rings or other environmental seals...guess the only way to ***REALLY*** determine its level of weather-resistance is to stick it outside somewhere and wait...looks like this will be one of those, "only time will tell" situations.
See below for a photo of its placement outdoors.

From A.G. at comes this text (no changes to spelling, grammar, or syntax were made):

"You see, we found a way to weatherproof the light without gaskets. The problem with gaskets is that the people who make gaskets want you to pay for the gaskets, and then that $0.10 gasket becomes a $0.75 price increase by the time it gets to the customer. Instead the light is designed such that, when properly oriented, all of the seams and bevels in the casing funnel water out and away from the electronics. For example note the large upsidedown V on the battery housing door. But you never want to make a perfectly water/air tight chamber because water will eventually condense on the inside no matter what you do. Hence the drainage slit in the bottom, or open skylight in the top I guess, ya'know, if you prefer it that way.

Our rigorous weatherproof testing procedure was to put the lights in the shower at our office for hours on end. This was a bit troublesome for our accountant/shipping manager/receptionist Lisna, who never knew when we were testing and would walk into the bathroom to find the overhead lights off, the shower running, and no one to be seen."

He also furnished the following video of the light being tested in the shower:

Photograph of the product, on the test target at 12".

Photograph of the product, illuminated (at minimum intensity).

Photograph of the product, illuminated (at maximum intensity).

Photograph of how I placed the unit outdoors for an extended 'weather test'.

We do not have a deck, so this is the best I could do in the interim
(I may affix it to the house sometime down the road).

Spectrographic analysis
Spectrographic analysis of the LED in this product (minimum intensity).

Spectrographic analysis
Spectrographic analysis of the LED in this product (minimum intensity); spectrometer's response narrowed to a band between 420nm and 470nm to pinpoint native emission peak wavelength, which is 444.444 nanometers.

Spectrographic analysis
Spectrographic analysis of the LED in this product (maximum intensity).

Spectrographic analysis
Spectrographic analysis of the LED in this product (maximum intensity); spectrometer's response narrowed to a band between 420nm and 470nm to pinpoint native emission peak wavelength, which is 443.017nm.

USB2000 Spectrometer graciously donated by P.L.

Video on YourTube showing how the Motion-Sensing Deck Light is fed (with 3 C cells) and used.
Video was used with permission of A.G. at Jenesis International.

Test sample of this product plus four other products was sent by A.G. of Jenesis International on 08-07-12 (or "12 Aug. 2012" or even "Aug. 12, twenty stick-very-twirly-stick" if you prefer) and was received at 11:11am PDT on 08-13-12.

UPDATE: 00-00-00

"Low Glow" means the batteries can last up to two full years!
Photoelectric (day/night) and motion-sensitive operation; no switches to fuss with or forget
Reasonably durable construction

Not very water-resistant (advertised as "weather-resistant") and not submersible at all (this is what nocked that last star off; however I might put it back if the unit passes an extended 'weather' test) {I NOW HAVE PROOF OF THEIR WEATHER-RESISTANCE -- THAT LAST STAR HAS BEEN ADDED!!!}

    MANUFACTURER: Jenesis International
    PRODUCT TYPE: Softly glowing "guide light" with intense "underlight"
    LAMP TYPE: Diffused T1 (3mm) and water-clear T1 (3mm) white LED
    No. OF LAMPS: 2
    BEAM TYPE: Underlight: Torroidal (X=360°, Y=170°); marker light: Wide-angle flood (X=270°, Y=170°)
    CASE MATERIAL: Plastic
    BEZEL: Diffusing ribbed dome to protect LED
    BATTERY: 3x C cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    ACCESSORIES: 3x screws, mounting bracket
    SIZE: 5.13" H x 2.75" W x 1.94" D
    WEIGHT: Unknown/not equipped to weigh
    WARRANTY: 1 year


    Star Rating

Motion-Sensing Deck Light *

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