Klein Tools ET450 Advanced Circuit Breaker Finder and Wire Tracer Kit for Energized and Non-Energized Breakers, Fuses, and Wires

This tool is a necessity for anyone working with electricity as it also works on live circuits. It will help you find hidden wires just about anywhere. One of the best cases was trying to find a ~20 year old buried cable outdoors where trees have grown up and the people that originally buried it must have been drunk because the line went in very odd multiple directions and power didn’t come out the other end about 300’ away. Turns out there was a buried splice in the ground about 1.5’ down where someone had spliced the line (went somewhere else into the back 40 🙄) only taped the connection (no marrets) and tried to encase it all in fiberglass 😂 I would never have found that without this tool. If you wanted to install lag bolts into a wall, the price of this tool for a one time use would be worth the cost to make sure a wire wasn’t in the way or you’d instantly be into more money to fix it if you needed to call an electrician to install a new wire.

This tool works well. It helped me trace a few unknown wires.

Excelente para buscar circuitos y lineas detras o bajo concreto, No decepciona, es algo que todo buen electricista debería de tener entre sus herramientas, hace el paro cañon ahorrando mucho tiempo en encontrar lineas.

Muy bueno lo he usado un par de veces y cumple con su función, en cables con y sin energía. Veamos que tal la duración de batería, pero hasta ahora todo OK.

The dust motes dancing in the afternoon sun always seemed to mock me, a visible representation of the frustration I'd been battling for months. I’m not one for writing glowing reviews—I usually keep my opinions to myself—but the sheer quality and engineering I’ve found in Klein tools have become impossible to ignore. They simply make things that are built to last, tools you can trust when the chips are down. ​And the chips were definitely down. ​The well on my property had been acting up for months, a source of endless headaches and low water pressure for my family of four. I’d brought in a parade of so-called "experts," well companies who offered plenty of expensive advice but no real solutions. Every single one was unwilling to put in the hours, to roll up their sleeves and truly troubleshoot the core problem. The consensus was grim: drill a new well. ​But I had a second, forgotten wellhead on the property. "Dry," they had all declared, or at the very least, "not enough to support a family." I couldn't shake the feeling they were wrong, but to prove it, I faced a daunting task: connecting the waterline and the electrical conduit—a challenging 71-foot run between that lonely wellhead and the main well house. I couldn't just tear up the driveway or risk severing other hidden power lines to the house. I needed to know exactly what lay beneath the soil. ​For a week, I was glued to my computer, diving deep into obscure well forums. It was there, amidst the threads of seasoned DIYers, that one name popped up: the Klein Tools ET450 Advanced Underground Circuit Breaker Finder and Wire Tracer Kit. The reviews were mixed, of course. Some users swore it was a toy, others claimed it only worked for short distances. But I was desperate and frankly, pragmatic. I'd been quoted $1,900 just for a specialist to identify the underground lines. I thought, for a mere $230, why not try this tool and educate myself? ​I pulled the trigger and waited. ​The day it arrived, I was ready to treat the frontyard like a construction zone. What I can say now, with absolute certainty, is that this tool is the REAL deal. It took patience, yes. I had to learn its language, finetune the sensitivity settings, and train myself to listen to its signals. But once I did, it performed a miracle. ​The ET450 didn't just help me locate one thing; it mapped out the entire subsurface puzzle. It identified the exact, safe path for the new waterline and, crucially, the existing electrical wiring, all buried three to four feet underground. Not only did it save me from a costly excavation disaster, it located wires twice—and these wires were hiding under concrete! ​The knowledge I gained and the confidence I built by doing the work myself were invaluable. But the true, stunning payoff? This little kit saved me from the grim fate the experts had predicted. I didn't have to drill a new well, nor pay for additional, unnecessary troubleshooting support. ​My total estimated savings: an astonishing $82,000. That's not just a review—that's a testament to good old-fashioned quality meeting modern engineering, proving that sometimes, the only expert you need is a determined person with the right tool.