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The allsun Automotive Electrical Tester is a professional-grade 2-24V digital circuit tool designed for quick and accurate automotive electrical diagnostics. Featuring a clear LCD voltage display, polarity indicators, and a 5-meter heavy-duty cable, it enables pinpointing electrical faults, powering components, and testing continuity safely with built-in overload protection and an automatic circuit breaker. Ideal for DIY car and marine repairs, it streamlines troubleshooting with precision and durability.

























| ASIN | B079ZRQRJR |
| Best Sellers Rank | #145,627 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #212 in Circuit Testers |
| Brand | allsun |
| Brand Name | allsun |
| Color | Black |
| Customer Reviews | 4.6 out of 5 stars 2,304 Reviews |
| Item Dimensions | 10.79 x 2.09 x 1.65 inches |
| Item dimensions L x W x H | 10.79 x 2.09 x 1.65 inches |
| Manufacturer | Zhang Zhou Shi Xiang Cheng Qu Hai Mao Dian Zi Ke Ji co., LTD |
| Measurement Type | Voltmeter |
| Min. Operating Voltage | 2 Volts (DC) |
| Minimum Operating Voltage | 2 Volts (DC) |
| Model | EM287 |
| Part Number | allsunEM287 |
| Power Source | Battery Powered,electric |
| Specification Met | Em287 |
| Style | Automotive Electrical Circuit Tester |
| Style Name | Automotive Electrical Circuit Tester |
| UPC | 788537552338 |
| Upper Temperature Rating | 125 Degrees Celsius |
A**N
Definitely a great automotive tester
This circuit tester is so easy to use you just hook onto the battery and start checking for voltage. It also saves a lot of time because you can also test whatever you are checking with the switch on the side of the probe. It is very easy and has a great amount of length in the cable so you can reach the entire vehicle or whatever you were testing.
E**B
Great tester for Marine use
If you have a boat, at some point you'll need to make repairs yourself as the cost of marine repairs is high. Many issues onboard are pumps and motors that fail. Sometimes its the part and sometimes its an electrical connection. This tool easily helps you determine quickly which of these it is. The wire length is perfect for my application and I can see exactly how many volts my equipment is receiving.
G**D
Funciona al 100%
Perfecto 👌
M**S
Tester Built for Larger Jobs
This large circuit tester is designed for more demanding electrical testing tasks. It feels durable and performs well in heavier-duty diagnostic situations. The readings are consistent and easy to interpret. Overall, it’s a solid tool for more advanced automotive or electrical work.
J**T
Great value for a DIYer
As a weekend DIYer, a tool where I can provide power and ground to diagnose electrical issues would be nice to have. I’ve searched and came across this tool from Allsun, the reviews I saw gave me the confidence to try it myself. The tool did its job and the money I would have spent to have a shop diagnose it, easily pays for itself. I’m glad there is a product in this price range for us DIYer and even entry technician that is on a budget. Looking forward to other products Allsun has to offer.
W**S
This made troubleshooting a car restoration much easier
The car i was working on had its harness removed when i got it so I needed to literally hook every thing back together including reparing several broke wires, connectors, and shorts. I thought this was cheap enough to get but wasnt sure it would be used more than my multimeter. It made testing so much easier. knowing wether something was hot or not and able to inject power into a circuit to make sure the load was connected properly made this job so much simpler. The cable is long enough i could crawl underneath the vehicle. and its never got disconnected from the battery no mater how much wiggling around I did. The tip could scrape through corrosion to make a solid connection and if I put power into the wrong circuit, it has a audible alert and circuit breaker that would reset after a few seconds. It could power any load on the vehicle even the starter for a the few moments i needed to verify it. Great product. Have no real criticism. possibly wish it had a audible tone when probing.
J**.
Great buy
Best electrical tool you can buy if you work on cars or trailers. Works great I use it all the time.
J**N
Cable is made of a stiff wiring and makes it a pain to use
But it functions well and is a great value. I am going to use the cable off my broken power probe.
H**S
Gut
Gut
R**H
Useful piece of kit
Item arrived promptly and was exactly as described. I like the variety of options this particular tester offers although as advised in the instructions you need to ensure it’s in the correct mode before testing units to ensure you don’t cause a short in certain test modes. Overall I’m very happy with the purchase, the price and performance to date.
M**L
conforme à la descripion
très prtaique facilité d'utilisation
A**Z
No funcionó
Me llegó hace 2 días y el día de hoy quise probarlo y tratamos por media hora en varias partes y jamás encendió ningún foco incluso limpiamos la batería y nunca funcionó , mal producto
G**S
La fiabilité de l'achat
Très bonne pièce
Trustpilot
2 months ago
1 week ago