Premium 16-in-1 Multimeter Test Leads Kit, Replaceable Silicone Jumper Wires with Electronical Alligator Clips Probes, Banana Plug, Power Testing Needle for Electronics, Circuit Connection, Experiment

I have had my multi-meter (“Micronta Multitester - Cat.# 22-201U”), for MANY YEARS, & finally the conductors of the original test leads broke & not repairable. I bought this Test Lead package because leads per picture were very similar to my original meter interface male contact size. WELL, MY GUESSING PAID OFF, THESE LEADS WERE A PERFECT SIZED MATCH. 👏👏👏👍🤗I am VERY Pleased with this product. 👍😃. Jerry AA

Cheap both in cost and quality. Good for test connections.

I checked the resistance of these leads; it's 2mOhms. The parts all fit, and offer all the flexibility I could want. The probes feel (and look) kinda' like toys, but they work very well, with points that are sharp, but not too sharp. Even the alligator clips mate perfectly without slop. The leads are very flexible (and they're small in diameter. I hope they hold up. They're not as long as most leads that come with T&M equipment, but in my case that is a good thing. They are by no means short, though.I bought four sets, and have only checked one so-far. I will update as necessary.

Was looking everywhere for replacement probes for my DC power supply and these work perfectly and I love the fact that I can swap the connections easily as unscrewing switching from probes to clips so easily while the banana plus connector plugs right into the power supply. Perfect

Worked perfectly, with a fast delivery

SEE PIC: Thin wire attached to screw head separated after ONE USE. Very fragile. The wire connection is contained inside molded plastic so there is no way to reattach it. Now it is worthless.

1 of the alligator clips Broke by me just hand tightened. Not meant for high voltage or high heat or high stress application for bench testing and hobby stuff it's ok

Review of J7-c USB testerI am torn in the number of stars to rate. The hardware is obviously 5 stars, but the total lack of documentation is reprehensible and should get 0 stars. So as to not scare readers away I chose 4 stars and provide missing information.This review is for a unit having the generic name of J7-c. There is no information on who made it, but various outfits offer it. The unit I received is offered by KayJi (or just KJ) with exactly zero documentation or even a url to find it.KISS (Keep It Simple ...): * If you have a USB charger with a type A connection (about 1/2" wide, only fits one way) and the device to charge uses the same kind of connection, and if all you want to do with this device is to measure the charging voltage and current, then just plug the J7-c Input into a charger and the load into the J7-c Output and read the numbers. Give it 5 stars and move on. * However, if you have a USB charger with a type C connection (about 3/8" wide and fits either way), then you must plug in the tiny micro-USB OTG (On The Go) adapter supplied into the micro-USB slot of the J7-c or the charging will not work. Without documentation you would not know this and would complain bitterly that the device does not work.DIG Deeper: * This device is much more capable than the Amazon posting suggests, and it is unlikely that you would divine how to use many of the features without documentation. There are some videos on the Amazon site, and with one exception they are content free. Most videos on YouTube are even worse.Some neat features: * Many display modes (can be confusing until one gets the hang of it). Note- the display is quite small, but quite sharp, and a magnifying glass may be of help. * Integrates the Volts and Amps over the time of charge and display the charging time, delivered mAh (milli-Amp hours), and delivered Wh (Watt hours). This can be used to assess storage capacity of the sink (phone or whatever) or the capacity of the power bank (e.g. battery) providing the power for the charge. * This information can be stored in one of up to 10 storage locations for future reference. * Display a graph of charging voltage and current in time. * Display a graph of USB data activity (D+, D- twisted pair drive lines) in time (if any). * Flip the display 180 degrees for easier reading if the normal orientation of the J7-c in the charger is inconvenient.USEFUL INFO: * Nomenclature: o "Home" display appears after the Welcome of first connection to power, showing just 3 lines V, A, W, and is the default after other displays time out. o "Click": Briefly pressing (fraction of a second) of the little button labeled "Display" and just below it "Reset" with a long bar. o "n-Clicks": Do n clicks in rapid succession. o "Long Click": Press and hold the button for 1 or 2 seconds, as in "Reset" * Group Number (NO.x) o There are 10 groups available in which measurements can be stored, such as accumulated time, mAh, or Wh. o The Group number is selected by clicking the Display button 5 times in rapid succession (5-Clicks). The first time brings up a display of the current group. Each set of 5 presses after that advances the number by 1. There is no "backspace", and it is clumsy to go from #2 to #1: press the button 45 times! That button is the only means of communication. How about Morse Code {:-? * Clearing (zeroing) Group information from Home: o Long Click: Clear all data in current group o 2-Clicks: Clear Capacity mAh o 3-Clicks: Clear Current Wh o 4-Clicks: Clear Time * Two plots offered o Plot #1: Press 1 click from Home. Shows V and I with upper and lower limits shown on the top and bottom of screen. If either changes significantly, the display changes scale. o Plot #2: Press 2 separate clicks from Home. Shows D+ and D-, the 2 legs of the twisted pair data driver, if any. Default for no data is about 2.7 V, provided by the J7-c, unless the load overrides it. o These turn off after 1 minutes and revert to Home. Clicking once restores display. * Screen Rotation: Single click several times to get to System settings: o Single click several times to get to #4 = Screen Rotation o Long click rotates / flips the screen. o Repeat to flip back. * Ohms:The detail display, and some others, show something labeled in Ohms, but that is just the supplied Voltage V divided by the supplied current I; R = V / I, as if it were a real resistance. It is not related to the resistance of the cable. It is probably intended for use with the external calibration load resistors (5 Ohm, and 2.5 Ohm). When charging a battery, there is a offset for V that confuses the calculation.SEARCH for Documentation:I wasted a lot of time trying to find anything useful. Forget YouTube, but Google this: J7-C USB Tester ManualThere are several hits, but watch out for booby-traps trying download other odds and ends. I found 3 hits that had some utility. One of them (KayJi) seems to point to someone in Russia. Another one (Hommie, in both English and French) seems to point to Hong Kong. I found no clue on the third one coming up with YOJOCK in its link. These are some help, but all are a bit sloppy and/or with some errors. None provide much of the information listed here above.ALLIGATOR CLIPS:The unit I received came with two cables with USB-A connectors on one end and alligator clips on the other end. I have not found any reliable source on what these are for.