Radio Shack # 276-299 Bright Red Blinking LED Module, retail $4.49 (
Manufactured by (Unknown) for Radio Shack (
Last updated 10-20-12

The Bright Red Blinking LED Module (hereinafter, just called a "flasher" or a "blinker") {well, "flasher" sounds a bit baudy!!! } is a fully self-contained device consisting of a black plastic battery holder and an amazingly bright blinking LED on the end of a set of 200mm (~7.90") long wires.

It is intended for uses such as pointing out signs and merchandising displays, as well as for use as a theft deterrent (criminals who see the red blinking light inside of a vehicle tend to think that a car alarm is active; they would then be less likely to break into that vehicle then break into one with no alarm indicator).

 Size of product w/hand to show scale SIZE

The blinker feeds from two AA cells, which you'll need to procure & install first (see below), and THEN you can make a phoney-bologna alarm for your vehicle.

On the upper front surface of the battery box, you'll see a small slide switch. As the side of the battery box with the switch is facing you and the LED wires come from the top, slide this switch toward the right to start the red LED blinking.

Slide this switch to the left to neutralise it (turn it off).

It's totally up to you as to how you want to mount the LED; from just one "testimonial" on the Radio Shack web page about this product comes the following (no changes to grammar or syntax were made):

After having my aluminum truck toolboxes broken into TWICE and cleaned of all tools (about $2,500 each time), I bought one of these, drilled one hole next to the keylock cylinder and literally taped it in place inside with duct tape. With only the 1/8" blinking LED visible outside, it provided the illusion of a hardwired alarm system, and I was never robbed again over the next five years."

To change the batteries, unscrew & remove the Phillips screw from the back of the unit, slide the battery door off, take them to a bridge over deep water (the Golden Gate Bridge would be ideal; however, the Juneau-Douglas Bridge would also suffice here), and throw them over the side so that they go "bulb bulb bulb" all the way to the bottom of Gastineau Channel with all of the bowling balls that were lobbed over that bridge in the 1950s and 1960s...O WAIT!!! YOU'LL NEED THOSE!!! So just set them aside instead.

Remove the used-up old AA cells, and dispose of or recycle them as you see fit.
Do not attempt to microwave them, flush them away, or for Christ sakes throw them into a trout-filled stream.

Insert two new AA cells into the battery compartment, orienting them so their flat-ends (-) negatives face the spring for them in each chamber.

Finally, place the battery door back on, and screw the screw back in.
Aren't you glad that you didn't huck that battery door & screw over the side of the Juneau-Douglas Bridge now?

This is what the Jueau-Douglas Bridge looks like...or what it look
ED like anyway before it was replaced in 1976.

And this is what the bridge looks like now.

Unable to measure the current consumption due to how the product was constructed and how it functions.

This is a flashing red LED module, 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 Metaltrailmon - um that's not it either...the bare Metalsusanoomon...crap...the 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!!!) {
where's the metal anyway?!?}, let my mother's big dog's ghost, her kitties, my kitty or my sister's kitty cat piddle (uranate) on it, hose it down with my mother's gun, run over it with a 450lb Quickie Pulse 6 motorised wheelchair, stomp on it, use a medium ball peen hammer in order to bash it open to check it for candiosity, fire it from the cannoņata, drop it down the top of Mt. Erupto (now I guess I've been watching the TV program "Viva Piņata" too much again - candiosity is usually checked with a laser-type device on a platform with a large readout (located at Piņata 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 cannoņata (also located at Piņata Central) is only used to shoot piņatas to piņata parties away from picturesque Piņata Island, and Mt. Erupto is an active volcano on Piņata 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 's web page will seem a bit more bare than this section of the web page on a page about a flashlight.

In fact, that photograph, two spectrographic analyses, and one video below may very well be it.

Beam photograph on the test target at 12".

Spectrographic analysis
Spectrographic analysis of the LED in this product.

Spectrographic analysis
Spectrographic analysis of the LED in this product; spectrometer's response narrowed to a band between 620nm and 650nm to pinpoint native emission peak wavelength, which is 634.777nm.

USB2000 Spectrometer graciously donated by P.L.

This video shows nothing more than the Radio Shack # 276-299 Bright Red Blinking LED Module doing...what else...flashing of course!
O boy! A red light blinking! SO HEART-POUNDING!! SO THRILLING!!!
Actually, it kinda makes you want to kick one of those wall-mounted porcelain uranators off the wall, doesn't it?

This video is approximately 40.6888675627 megabytes (41,108,878 bytes) in length; dial-up users please be aware.
It will take no less than two hundred three minutes to load at 48.0Kbps.

Test unit was purchased on the Radio Shack website on 10-06-12 and was received on 10-16-12.

UPDATE: 00-00-00

Very bright red flashes
Wider than usual viewing angle
Long battery life
Uses batteries that are common and relatively inexpen$ive

Battery door secured with a small screw -- which I already lost

Nome that I've yet to discover

    MANUFACTURER: Unknown for Radio Shack
    PRODUCT TYPE: LED blinker for signs, merchandising, anti-theft, etc.
    LAMP TYPE: 5mm red LED
    No. OF LAMPS: 1
    BEAM TYPE: Medium spot with bright corona
    SWITCH TYPE: Slide on/off on front surface of battery case
    CASE MATERIAL: Plastic
    BEZEL: N/A
    BATTERY: 2x AA cells
    CURRENT CONSUMPTION: Unknown/unable to measure
    WATER- AND URANATION-RESISTANT: Light splatter-resistance at maximum
    SIZE: 67.50mm H x33mm W x 18mm D x 200mm wire length
    WEIGHT: 65.90g (2.330 oz.)
    WARRANTY: Unknown/not stated


    Star Rating

Radio Shack # 276-299 Bright Red Blinking LED Module *

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