Pros:
- Includes storage case and two 9V batteries
- RF "Tone" mode works well to trace open circuits
- Can help locate faults not detectable by multi-meters
- Sound signal makes wire tracing intuitive
- Identifies open circuit location with reasonable accuracy
- Helpful for automotive wiring diagnostics
- Straightforward setup and usage
- Green LED indicator for short detection in "Conductivity" mode
Cons:
- Uses 9V batteries which are more costly than AAs
- Beep volume decreases gradually, requiring practice to interpret
- "Conductivity" mode is basic and less effective than a multimeter
- No abrupt beep stop at fault location may confuse beginners
- Accuracy of pinpointing fault takes time to master
- Beep volume is a little low and may not work well in a noisy garage
The Zzxker Electrical Circuit Tracer, Transmitter and Receiver Set has a decent quality. It comes with a storage case and includes two 9V batteries. In a typical application, the transmitter emits an RF signal through either the red or the black alligator clip. The receiver detects this signal, and the louder the beep, the stronger the signal.
This tool is ideal for identifying an open circuit in the middle of a long wire. This is called "Tone" mode. You set up the transmitter at one end of the wire, then use the receiver to trace the wire from that point. If the wire is not broken, the beeping should continue all the way to the end. However, if there's an open circuit, the beep starts to fade as you pass over the fault. The volume drops significantly by about 2 to 3 inches after the break point. With some practice, I was able to locate the fault with decent accuracy. It is a handy device that performs a task no multimeter can do. I am delighted with its effectiveness.
The transmitter can also operate in "Conductivity" mode using both clips. When a short is detected, a green LED lights up. This mode is a bit primitive, and a multimeter does the job better. In my opinion, the real value of this product is in the RF tracing “Tone” mode.
Overall, this circuit tracer works well for finding breaks in long wires. It takes practice to use "Tone" mode effectively. I just wish it used AA batteries, as 9V ones are more expensive. I'm glad I ordered this special-purpose tool. It should be very useful for car wiring and electrical work.
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Circuit breaker finder,cable tracker electricalZzxker Direct
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Circuit Tracer,Wire Tracer Electrical,Automotive Electrical Open&Short Finder Circuit Tester,Wire Cable Tracker,DC 6-42V Short Circuit Detector Tester Tool(Batteries 2PCS Included)
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Purchase options and add-ons
Brand | Zzxker |
Power source | Dc 6-42v |
Style | Circuit Tracer,Wire Tracer,Automotive Electrical Open&Short Finder Circuit Tester,Wire&Cable Tracker Electrical See more |
Colour | Black |
Min. Operating voltage | 6 Volts (DC) |
Maximum operating voltage | 42 Volts (DC) |
Manufacturer | Zzxker |
About this item
- Accurate Wire Tracer Electrical: The circuit breaker finder immediately detects a circuit break and sounds an alarm.You can quickly and easily Locate short circuits, open connections, broken wires, current leaks and even trace wires.
- Checking Short Circuit: This automotive electrical open&short finder enables precise identification and tracing of wires or cables without damaging their insulation;Tracing of wires is made possible even inside bundles,conduits,behind panels,under carpets,upholstery, etc.
- Easy to Use:Simply connect the transmitter in series with the circuit or wire under test, (i.e.: in place of a blown fuse,across a connector, in series with an open wire, a light bulb socket, etc.), and scanning the circuit/wire with the tracers flexible probe to find the trouble spot.
- Wide Application:The Circuit Tracer is suitable for DC 6~42 volt circuit power supply,7" flexible probe allows reaching wires in congested places.Internally protected against power surges and overloads,adjustable sensitivity for all tracing situations.(Note: Do not use on AC voltage.)
- Package Includes:1 Automotive Short & Open Finder Kit (1x Receiver, 1x Sender, 2x 9V Batteries, 1x Carrying Pouch) & 1 User Manual.And we will provide 1-year warranty, 30 days no reason to return and exchange, and have technical support to solve quality problems in a timely and effective manner within 24 hours.You can buy without worry!
Product details
- Parcel Dimensions : 25.81 x 12.29 x 3.71 cm; 331 g
- Date First Available : May 24 2025
- Manufacturer : Zzxker
- ASIN : B0DXKKTT22
- Manufacturer reference : EM415PRO
- 鶹 Rank: #76,004 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
- #135 in Circuit Testers
- Customer Reviews:
Frequently bought together

This item: Circuit Tracer,Wire Tracer Electrical,Automotive Electrical Open&Short Finder Circuit Tester,Wire Cable Tracker,DC 6-42V Short Circuit Detector Tester Tool(Batteries 2PCS Included)
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Product Description




TECHNICAL SPECIFICATION
Operating Voltage | 6-42V DC |
Transmitter Dimensions | 2.55*2.36*0.78 in (L*W*H) |
Receiver Dimensions | 7.87*1.65*0.98 in (L*W*H) |
Power Source | 9V (Powered by Internal 9V X2 Battery) |
Working Current | 0.2-0.5A |
Probe Length | 7.28 in |
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Does it come with batteries?
Yes. This automatic electrical open and short finding tool comes with 2 9V batteries for the receiver and transmitter. When the tool is not in use, please remove the batteries directly to avoid draining the power.
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What should I do if my open and short finding tool is broken?
We offer 12-months War ranty and Lifetime Af ter-s ale service. If your unit breaks down or malfunctions, please reach us directly and we can send you a new unit within 24 hours.
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Can this tester accurately locate the short circuit point?
Sorry, it can’t, only for the short area.This is an entry-level tester that can only roughly determine the area of the short circuit, but it can also determine the short-circuit point.
Customer reviews
4 out of 5 stars
4 out of 5
22 global ratings
How are ratings calculated?
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on 鶹. It also analyzes reviews to verify trustworthiness.
Reviews with images

5 out of 5 stars
Great for locating an open circuit in a wire
Pros: - Includes storage case and two 9V batteries - RF "Tone" mode works well to trace open circuits - Can help locate faults not detectable by multi-meters - Sound signal makes wire tracing intuitive - Identifies open circuit location with reasonable accuracy - Helpful for automotive wiring diagnostics - Straightforward setup and usage - Green LED indicator for short detection in "Conductivity" mode Cons: - Uses 9V batteries which are more costly than AAs - Beep volume decreases gradually, requiring practice to interpret - "Conductivity" mode is basic and less effective than a multimeter - No abrupt beep stop at fault location may confuse beginners - Accuracy of pinpointing fault takes time to master - Beep volume is a little low and may not work well in a noisy garage The Zzxker Electrical Circuit Tracer, Transmitter and Receiver Set has a decent quality. It comes with a storage case and includes two 9V batteries. In a typical application, the transmitter emits an RF signal through either the red or the black alligator clip. The receiver detects this signal, and the louder the beep, the stronger the signal. This tool is ideal for identifying an open circuit in the middle of a long wire. This is called "Tone" mode. You set up the transmitter at one end of the wire, then use the receiver to trace the wire from that point. If the wire is not broken, the beeping should continue all the way to the end. However, if there's an open circuit, the beep starts to fade as you pass over the fault. The volume drops significantly by about 2 to 3 inches after the break point. With some practice, I was able to locate the fault with decent accuracy. It is a handy device that performs a task no multimeter can do. I am delighted with its effectiveness. The transmitter can also operate in "Conductivity" mode using both clips. When a short is detected, a green LED lights up. This mode is a bit primitive, and a multimeter does the job better. In my opinion, the real value of this product is in the RF tracing “Tone” mode. Overall, this circuit tracer works well for finding breaks in long wires. It takes practice to use "Tone" mode effectively. I just wish it used AA batteries, as 9V ones are more expensive. I'm glad I ordered this special-purpose tool. It should be very useful for car wiring and electrical work.
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Top reviews from Canada
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- Reviewed in Canada on July 1, 20255.0 out of 5 starsPros:
Great for locating an open circuit in a wire
Reviewed in Canada on July 1, 2025
- Includes storage case and two 9V batteries
- RF "Tone" mode works well to trace open circuits
- Can help locate faults not detectable by multi-meters
- Sound signal makes wire tracing intuitive
- Identifies open circuit location with reasonable accuracy
- Helpful for automotive wiring diagnostics
- Straightforward setup and usage
- Green LED indicator for short detection in "Conductivity" mode
Cons:
- Uses 9V batteries which are more costly than AAs
- Beep volume decreases gradually, requiring practice to interpret
- "Conductivity" mode is basic and less effective than a multimeter
- No abrupt beep stop at fault location may confuse beginners
- Accuracy of pinpointing fault takes time to master
- Beep volume is a little low and may not work well in a noisy garage
The Zzxker Electrical Circuit Tracer, Transmitter and Receiver Set has a decent quality. It comes with a storage case and includes two 9V batteries. In a typical application, the transmitter emits an RF signal through either the red or the black alligator clip. The receiver detects this signal, and the louder the beep, the stronger the signal.
This tool is ideal for identifying an open circuit in the middle of a long wire. This is called "Tone" mode. You set up the transmitter at one end of the wire, then use the receiver to trace the wire from that point. If the wire is not broken, the beeping should continue all the way to the end. However, if there's an open circuit, the beep starts to fade as you pass over the fault. The volume drops significantly by about 2 to 3 inches after the break point. With some practice, I was able to locate the fault with decent accuracy. It is a handy device that performs a task no multimeter can do. I am delighted with its effectiveness.
The transmitter can also operate in "Conductivity" mode using both clips. When a short is detected, a green LED lights up. This mode is a bit primitive, and a multimeter does the job better. In my opinion, the real value of this product is in the RF tracing “Tone” mode.
Overall, this circuit tracer works well for finding breaks in long wires. It takes practice to use "Tone" mode effectively. I just wish it used AA batteries, as 9V ones are more expensive. I'm glad I ordered this special-purpose tool. It should be very useful for car wiring and electrical work.
Images in this review
- Reviewed in Canada on July 2, 20251.Clear audio signal makes it easy to trace breaks or shorts
2.Flexible probe helps reach behind panels and under carpeting
3.Good for basic troubleshooting without pulling wires apart
4.Compact kit includes batteries and pouch—ready to go
This tool really helped me track down a wiring issue in an older vehicle where a light wouldn’t come on. I didn’t have a shop full of gear, just this tester and a multimeter—and this turned out to be the quicker option. I clipped the sender across the fuse line, then moved the probe along the path. The tone clearly dropped off when I hit the damaged section.
One of the most useful parts is the probe itself—it’s flexible enough to maneuver behind dash panels and under carpet, where I normally wouldn’t want to tear things apart just to inspect a line. I also appreciated how I could adjust the sensitivity a bit when the signal was bouncing.
While I wouldn’t use it on every job, it’s a strong tool to keep in the box for anyone who occasionally works with cars, trailers, or low-voltage DC systems. Especially if you hate the trial-and-error of tracing wires blindly, this little tool gives you clarity fast—without stripping anything or wasting hours guessing.
- Reviewed in Canada on July 3, 2025I used this wire tracer for finding a fault in my landline and it works reasonably well for the price range. It works especially well for tracing/toning wires to find a break although it's not the greatest for detecting shorts. For example, I was able to hook up the emitter’s alligator clips to the tip and ring wires on my phone line and use the receiver to hear the tone at each connection point, phone jacks and wires throughout my home. The tone is loud and I like that it doesn't need to be directly touching a wire and the volume can be adjusted by using the rotary dial if needed.
This tester is unable to locate a short circuit although it can tell you whether or not wires are shorted. The emitter has a continuity setting and the green LED will illuminate when there's less than 10 ohms resistance, indicating there's a short. This is something that can be done using a standard multimeter and I would've preferred if this was able to pinpoint where a short circuit may be. As a test, I twisted the tip and ring wires together on my phone line to make a short circuit and the receiver would only pick up a faint tone throughout the whole length of the wire instead of a solid tone up to the short.
Overall this works well for finding open circuits and for tracing wires and I suppose it can be used to determine whether or not a circuit is shorted although it's not very helpful for pin pointing where a short may be located. The build quality feels typical and it's made of rigid plastic with a corrugated steel sensor cable and strong alligator clips. The storage case holds everything together nicely without feeling excessively bulky.
3.0 out of 5 starsI used this wire tracer for finding a fault in my landline and it works reasonably well for the price range. It works especially well for tracing/toning wires to find a break although it's not the greatest for detecting shorts. For example, I was able to hook up the emitter’s alligator clips to the tip and ring wires on my phone line and use the receiver to hear the tone at each connection point, phone jacks and wires throughout my home. The tone is loud and I like that it doesn't need to be directly touching a wire and the volume can be adjusted by using the rotary dial if needed.Good for locating breaks and for tracing wires. Cant locate shorts but can tell if wires are shorted
Reviewed in Canada on July 3, 2025
This tester is unable to locate a short circuit although it can tell you whether or not wires are shorted. The emitter has a continuity setting and the green LED will illuminate when there's less than 10 ohms resistance, indicating there's a short. This is something that can be done using a standard multimeter and I would've preferred if this was able to pinpoint where a short circuit may be. As a test, I twisted the tip and ring wires together on my phone line to make a short circuit and the receiver would only pick up a faint tone throughout the whole length of the wire instead of a solid tone up to the short.
Overall this works well for finding open circuits and for tracing wires and I suppose it can be used to determine whether or not a circuit is shorted although it's not very helpful for pin pointing where a short may be located. The build quality feels typical and it's made of rigid plastic with a corrugated steel sensor cable and strong alligator clips. The storage case holds everything together nicely without feeling excessively bulky.
Images in this review
- Reviewed in Canada on July 3, 2025This will find breaks in wiring, but not shorts. At least it won't be able to locate shorts in a specific area of your wire. It will simply tell you the line is shorted. And as for locating wiring, this device works great. I work in instrumentation and there are a lot of wiring in the building I work at. So I use this device to locate wiring for different circuits. It definitely saves a lot of time compared to the physically push and pull method.
Top reviews from other countries
- 鶹 customerReviewed in the United States on April 26, 2025
5.0 out of 5 stars Good deal on wire tracer
The Zzxker Circuit Breaker Finder made tracking down the fault in my low-voltage lighting wire a breeze. I had been looking at this type of wire locator for a while but concerned about the price, but this one is less expensive than the others I found. I was pleasantly surprised that the detector was accurate enough to faintly pick up the signal from wire from a couple feet away which saved me the need to crawl around, and once the signal stopped I was able to home in on the problem spot. It really worked well.
- Joe GunnReviewed in the United States on June 3, 2025
1.0 out of 5 stars Don't waste your hard earned $$
Verified PurchaseI've tried every way possible to figure this thing out, it just makes a constant tone, sometimes louder than others, but it won't identify a single wire in a bunch.
- supplement product reviewsReviewed in the United States on April 21, 2025
3.0 out of 5 stars They always show how to find a break, but never a short...
It works well to find a break in a wire, but notice in their own product demonstration video, they talk about finding a break ...but NO MENTION of finding a short even though finding shorts is part of the overall product description
I can't see any way that this will reliably find a short and I suspect that is why they don't demonstrate that functionality.
Therefore, 3 stars because it's great for finding breaks but I can't get it to find a short, thus for me it only has half the functionality that they claim. So it's useful for some tasks but not what I expected.
- Eric MocklerReviewed in the United States on May 18, 2025
4.0 out of 5 stars Fox & Hound
This fox/hound kit works under testing with a 3' length of CAT 6. It's not as loud as my other one, and it can get noisy in the server rooms with all the fans going, UPS beeping, capacitors whistling and people asking when the internet's coming back. it also does not have the RJ-11 connector on the tone generator like my other set has. But it will get the job done and has an earphone jack so you can hear the tone above people yelling.
- Michael ErchulReviewed in the United States on April 19, 2025
5.0 out of 5 stars Wire tracer
Id been wanting one of these for some time now but finally pulled the trigger on it. I enjoy fixing things and troubleshooting is a huge part of it. This is nice! I wished I'd had this year's ago when you did things the old fashioned ways. You hook up to the wire and it sends a signal through it making it easier to trace it throughout its journey.
I've had a household version of this for years but never one for low voltage. If you ever have to trace a wire in a car this will certainly make things so much easier!