













🔧 Power up your diagnostics with precision and reach!
This Large Size Heavy Duty Digital LCD Circuit Tester offers a broad 3-48V testing range ideal for automotive electrical systems. Featuring a highly accurate ±0.2V backlit display, a durable acetate fiber body, and a sharp stainless steel probe, it ensures reliable diagnostics. The 140-inch extended spring wire with alligator clip enables easy one-handed operation in tight spaces. Designed for professionals and enthusiasts alike, it comes with lifetime customer support for lasting peace of mind.






| ASIN | B077YM5QL8 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #67,801 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #126 in Circuit Testers |
| Brand | JASTIND |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,179) |
| Date First Available | December 6, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 4.9 ounces |
| Item model number | 13 |
| Manufacturer | Tianchang Zhaohong Instruments |
| Material | ABS |
| Measurement Type | Voltmeter |
| Min. Operating Voltage | 3 Volts |
| Package Dimensions | 10.83 x 2.68 x 1.77 inches |
| Part Number | JTCVT-01A |
| Power Source | Battery Powered |
| Size | 3-48V circuit tester |
| Specification Met | NIST, UL |
| Style | Circuit Testers |
| UPC | 682698800102 |
W**D
Good tool this tester is a handy little gadget works great easy to see can't get much better
This is a great little tester easy to read easy to use all around good tool
W**M
REALLY nice…..
This tester far exceeded my expectations! Wow…..
K**E
Farmer
I like it it works good
G**E
Good quality, heavy built
Only used it once but it is a heavy built and easy to use. Better than the cheap test lights I heavy and a good value for the money.
A**R
Appears to be well made.
Looks to be pretty well made. I like the length of the cord. Appears to be well made for the money.
A**R
Professional Quality
I bought this tester because I wanted to know a little more about my quick circuit testing than a dummy test light will tell you. This thing checks all the boxes of high quality. I have been using it on 36 volt and 48 volt golf carts. Helps in checking the batteries and running your lower 12 volt accessories without burning them out. I have used a lot of different testers over the years and this one hands down is better than any other I have ever used. It is my go to tool. I use this every day and it is far easier and quicker then getting out my $200 meter (that is a pain in the butt to use). The only negative is that the meter does not give any measurement past 48 volts. However, LOL. I did buy this as a 3v-48v tester and it does that job precisely. Great customer service as well if you have any questions or issues with your circuit tester.
P**L
Really Nice!
Upon opening the packaging I could see I was impressed with it’s visual quality. I took it out to the garage to see how it works on my own pickup. I grounded it to the body and touched it to the positive post on the battery. I quickly noticed that I had the LCD window turned away from me and when I went to readjust the tester stopped working and I couldn’t make it work again, so by now I’m pretty angry. Upon a visual examination I noticed the cord end screws off so I remove it to see if there might be a inline fuse but it was only a spring to hold tension between the cord and volt meter .mechanism. I cleaned it off and put it back together and it started working again with no more mishaps. The numbers aren’t clearly visible until you have the LCD window at the perfect position which might pose a problem when you’re in an awkward position and can’t move to see it perfectly. All in all those where the only two annoyances I seen with this tool, it’s kind of like a miniature version of the Power Probe which I also have. Can’t hardly wait to start using it!!
G**C
Good quality and easy to use
Bought this after i fried my regular test light-didn't know it was for 12 to 24 volts. I used this for installing some battery gauges on my golf car-48 volts. It works great. Easy to see the numbers on the tester even after dark. I really like the way it's lights up so it's easy to read after dark. the ground lead is plenty long with a good clamp on it. I defiantly recommended this tester.
P**R
really easy to use and the spring cord keeps everything neat when your work and the lights on the display helps to see thing better in dark spaces like a fuse box
C**S
Great equipment and good quality and fit for my purpose
J**A
Great light like the long lead
Trustpilot
1 month ago
3 days ago