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1.Handy device for testing LED's. Simply plug your LED into the correct holes (all of which are marked) and push the button to see its brightness, illuminant color, etc.
2.2. Handy device for testing LED's (2-150mA)
3. Simply plug your LED into the correct holes (all of which are marked) and push the button to test its brightness, illuminant color, etc.
4. The top row is for 2 pin LED's with currents ranging from 2mA - 30mA
5. The bottom row is for 4 pin LED's (piranha LED's) with currents ranging from 20mA - 150mA 6. Powered by a 9V battery (not included
7. Size (L*W*H) : Approx. 8 x 5.5 x 2.2cm / 3.15" x 2.16" x 0.87"
Package Includes:
2 * LED Test Box Tester
James Colville
Reviewed in the United States on May 12, 2025
GARBAGE!Battery and battery clip too wide to fit into housing without forcing it.EVERY solder connection and circuit board run on the switch board was bad. Had to completely resolder the board.NO NOT buy this junk!
Christophe
Reviewed in France on May 4, 2024
Produit complément décevant, les deux sont défectueux, plein de faux contacts, il faut tenir la led pour le test, a fuir !!!!
Client d'
Reviewed in France on May 13, 2024
Bonjour appareil très pratique pour voir la luminosité des leds
WC
Reviewed in the United States on February 7, 2024
Threw some batteries in and it worked right away. Good to have on hand to organize or test any questionable LEDs immediately.
George
Reviewed in Canada on February 3, 2024
The socket connection on one is a little flakey, you have to hold the LED just right sometimes. it's a simple item and does the job. I'm going to build a couple of those LED matrixes so something around a thousand LEDs I'd like to check before I solder them together. The second one didn't work at first. Full of cold solder joints. Some touch up with the iron and fresh solder fixed that....
alm
Reviewed in the United States on December 14, 2024
Perfect for what I needed
Don_CC12
Reviewed in the United States on November 10, 2024
There isn't a whole lot to say about this product. Essentially it's a 9V battery with a bunch of resistors chosen to approximate the various test currents printed on the front cover. There is no current regulation of any kind, so all of the markings are merely estimates, particularly with the higher current options and a battery that isn't fresh. The built in LED is convenient, since it confirms that the battery has not completely expired.One of the two units I received had very poor soldering of the SMD components, with two resistors just rattling around in the case. The second unit was fine.There are no brass inserts for the rear cover screws. The case is just barely big enough to accommodate the battery; it is a struggle to cram in some alkalines that are fractionally bigger.in height.In summary, it's a handy pocket sized go/no-go tester, but don't expect any accuracy in the test currents, and it seems it could benefit from a little better soldering and quality control.
Walter Zappa
Reviewed in Italy on March 3, 2023
Serve solo se si accende il led la differenza per la misura di corrente si nota poca, adopero il tester per la misura.
roberto
Reviewed in Italy on June 27, 2022
Va molto dene
ERIC ADAMSON
Reviewed in the United States on March 2, 2021
Very helpful for basic go/no-go determinations when grabbing LED's from the junk box. Better yet, verifying the color and brightness of that water clear LED that turned up under my bench.
Customer
Reviewed in the United States on December 5, 2021
as others say: You have to force the 9v battery into its place. And when you do, prepare for the adjacent circuit board to pop out and then you're screwed.IF you try to rig the board back in place, put zero pressure on the test button and LED because their copper traces are NOT cladded to the fiberglass board at all. The copper traces not only easily lift from the board, but the heat from any soldering tool to repair the trace damage will actually burn the ultra- ultra- thin copper and the more you "repair," the worse the damage gets.now, with one tester in the trash, i opened the second tester and immediately poured potting epoxy on that troublesome board to keep things from falling apart.these things make junk look valuable.
Trogdor
Reviewed in the United States on December 30, 2019
This LED tester is a great idea, but the area for the battery is too small to close. Also, one of the testers has a broken screw hole, so it won't close securely, but it's not really an issue since a 9 volt battery can't fit comfortably anyway.The tester itself works great. It has various sections so you can apply the correct current to your LEDs. I definitely recommend to anyone looking for a portable low voltage power supply/LED tester.
P. Schmidt
Reviewed in the United States on November 1, 2019
This little device is supposed to be a small handheld tester for LEDs, which can verify LED functionality and polarity, and help determine correct current for desired illumination level and also show the true LED color. It is supposed to do this by having a wide range of series resistors that, depending on where the LED is plugged in, will result in various LED currents. The product marking suggests about 10 different currents, and Amazon description suggests perhaps 2~30mA. In actuality, there are only four different series resistor values for the marked 2~30mA range. There is also a set of connector strips for multi-pin LEDs, such as 3-pin bi-color, and there are five different series resitor values for that, although only 20, 50, 70 and 150mA are marked. The device markings also do not match the connector holes, so they are in effect meaningless. About all this device is good for is testing LED functionality and general brightness, but you can't tell from this what current is achieving that brightness.Amazon's listing details incorrectly describe the functionality, making it seem that the device can actually monitor/detect LED functionality, brightness, and color, when in fact all it can do it turn the LED on and the user has to do all of those other things.It is my guess that when originally designed, this product was probably better. It most likely had different resistor values for every pair of pin sockets on the connectors. giving a wide range of LED currents. But as with so many items of Chinese manufacture, they get copied indiscriminately by other makers, who either don't understand the fine details and compromise the copies of the product that they are producing, or else they deliberately cheapen the product by leaving out, or substituting parts. I believe that this particular version of this device is a poor knock-off of a better original product, with the wrong component values installed by the manufacturer. Where there should be a continuous progression of series resistor values, this manufacturer has used only a few values, but several of each, making for a coarse graduation of current instead of a fine one.I shall be advising Amazon that this product is unacceptable, and then return mine.
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