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Circuit Master™ Digital Circuit Diagnostic Tool

20 reviews
Circuit Master™ Digital Circuit Diagnostic Tool

Circuit Master™ Digital Circuit Diagnostic Tool

20 reviews
Regular price $ 99.99 Sale price $ 54.98


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If you're looking for faulty car wires without this, then you're doing it wrong! 

This instrument is designed to identify and trace wires or cables without damaging the insulation. You can also use it for checking short circuits and locating open circuits and so on.  

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There are sender and receiver functions included in the instrument. As soon as you hover over the faulty part it will make a sound! No more struggling to find the issues and no more damaging your vehicle while doing so!

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Don't spend hundreds at the auto-shop before you know the real problem! This diagnostic tool will be your new best bud.


✅ 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, and scan the circuit/wire with the tracers flexible probe to find the trouble spot. A sound will blare.

✅ 42 V Ready: for use in the new generation of vehicles with mixed or single 42  Volt systems.

✅ Operates:  on DC voltages from 6 to 42 volts.

✅ Internally protected:  Safe  against power surges and overloads.

✅ 7" flexible probe: allows reaching wires in congested places.

✅ Transmitter and Receiver: LEDs show open or short circuit conditions.

✅ Adjustable sensitivity: for all tracing situations.

✅ No wire piercing required:  This is non-contact technology! Safer and faster.



✅ 1 x Circuit Master™ Digital Circuit Diagnostic Tool

✅ 1 x Carry Bag

✅ 1 x Instruction Manual

Customer Reviews
4.9 Based on 20 Reviews
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Filter Reviews:
Adam L.
I recommend this product

The order is tracked came in the integrity and safety of the battery included is, connected works came very by the way found a breakage in the car for a few minutes at first thought that a useless thing but you need an ear to train the first time and not to disassemble the breakage is not done qualitatively if you take earning money deeply then i advise buying i use purely in car electrician. Thumbs-up for very accommodating customer service!

ProdigyGoods Circuit Master™ Digital Circuit Diagnostic Tool Review
Kevin R.
I recommend this product

This product is very helpful. I only evaluate the products that are very impressive to me. After half a month's use, I feel this product is really good.With this tool you can quickly determine if the correct voltage (or ground) is present or if the circuit has a load attached and then instantly inject the correct voltage or ground. No more deceptive of false voltages or resistance.

ProdigyGoods Circuit Master™ Digital Circuit Diagnostic Tool Review
Steve G.
I recommend this product

Works great. Very easy to use. Found blown fuse in RV and home sprinkler system found broke wire.

ProdigyGoods Circuit Master™ Digital Circuit Diagnostic Tool Review
Mario N.
I recommend this product

Let me start off by saying I've owned a power probe and made it SMOKE. So I decided to buy this one versus the Snap-on due to cost. I buy and fix old vehicles and selling them plus i work on all my own vehicles also family's cars I swear I think I run a shop some times. So far I am very pleased with this tool I became well acquainted with this tool fast I love the fact that it comes with the extension other companies charge extra for it. This one works just like the name brands just cheaper.

ProdigyGoods Circuit Master™ Digital Circuit Diagnostic Tool Review
Gary E.
I recommend this product

Great cable tracker. Powerful, yet easy to use. It allows you to find broken or misplaced cables in few moments. I highly recommend the Circuit Master.