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TEMPO · TEMPO Communications 501 Tracker II Underground Wire Locator, Buried Wire Locator, Underground Wire Tracer, Locate Wires 7 Ft Deep (2026 Model)
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Verdict
The Tempo 501 Tracker II is a specialist tool with a clear purpose: finding things that are buried. The listing states isolation, path tracing and depth determination for buried conductors and metallic pipes over distances of 4,000 feet and depths of 7 feet, using inductive signal detection that works on active or dead systems. It names electrical, communications, coax, telephone and utility lines, invisible fence wire, landscape lighting cable, fish tape and metallic pipe. For anyone who repairs outdoor lighting, irrigation controls, pet fences or site services, it replaces a shovel and a hypothesis.
Documented Specifications
| Item | Manufacturer listing |
|---|---|
| Distance | Up to 4,000 feet (1.2 km) |
| Depth | Up to 7 feet (2.2 m) |
| Circuit state | Active or dead systems |
| Detection | Inductive signal detection |
| Targets | Electrical, communications, coax, telephone, utility, invisible fence, landscape lighting, fish tape, metallic pipe |
| Output | Path trace and depth determination |
The Economics Are Simple
An underground fault has two costs: finding it and fixing it. The fixing is usually straightforward once the location is known. The finding, without an instrument, means excavating along a route you are guessing at, which damages a lawn, a driveway or a planting bed, takes hours, and carries a real risk of cutting something else that is down there. One successful location pays for a tool like this, and the second one is profit.
Depth Is the Number That Protects You
Path tracing tells you where to dig. Depth tells you how. Knowing that a cable sits at 400 mm changes how a machine is used, or whether a machine is used at all. It also warns you when a cable is far deeper than expected, which usually means it is not the cable you thought you were following, or that it dives under an obstruction.
Treat any depth figure as an estimate influenced by soil, moisture, nearby metal and the signal path. Use it to decide the method, not to justify swinging a digger at a precise number.
Tracing Dead Conductors Is the Common Case
Most of the time you are looking for a buried cable, it is because it stopped working. A locator that requires a live conductor cannot help with a broken invisible fence wire, a dead lighting run or a cable that has been cut by somebody else’s excavation. Inductive detection with an injected signal works on a dead conductor, which is why the listing’s statement about active or dead systems matters more than it appears.
Technique Decides the Result
- Connect the transmitter properly, including the earth reference where the procedure calls for it. A poor return path produces a weak and wandering signal.
- Walk the path slowly. The response peaks and falls over a short distance, and walking quickly steps straight over it.
- Mark as you go with pegs or paint. A traced route you have not marked is a route you will re-trace.
- Expect metallic pipes, reinforcement mesh and other services to carry coupled signal. A second path that appears halfway along is usually coupling, not a branch.
- Always follow local practice for locating buried services before excavating, whatever any instrument indicates.
Strengths
- Stated range of 4,000 feet, far beyond a general purpose tracer.
- Depth determination as well as path tracing.
- Works on dead as well as live conductors.
- Covers pipes and non-electrical targets such as fish tape and fence wire.
Limitations
- Specialised, so it earns nothing on indoor work.
- Accuracy depends heavily on connection technique and ground conditions.
- Coupled signal on nearby metal can create misleading paths.
- No accuracy or resolution figures published in the bullets.
How It Compares
The Klein ET450 and the Ideal SureTrace cover in-building tracing with some underground capability, and are more useful if most of your work is indoors. For finding which breaker feeds a socket, neither this nor those is the right tool; see the KAIWEETS KT301P. Our ranking is in the circuit breaker finder roundup.
How We Research
All figures come from the manufacturer listing. We did not run laboratory tests and publish no measurements of our own.
Recommended Tools
Products shown because their documented specifications fit this guide. Price and availability are on Amazon and can change.
Frequently Asked Questions
How deep can it locate?
The listing states depths of 7 feet, or 2.2 metres, and distances of 4,000 feet, or 1.2 kilometres, for buried conductors and metallic pipes.
Does the cable have to be live?
No. The listing states inductive signal detection usable on active or dead systems, which is what allows a disconnected landscape lighting cable or a dead invisible fence wire to be traced.
What can it trace?
The listing names electrical lines, communications cables, electric dog fence and invisible fence wires, fish tape, metallic pipes, outdoor and landscape lighting cables, and coax, telephone and utility lines.
Does it give depth as well as position?
The listing states it determines the depth of buried conductors as well as tracing their path, which is the figure that decides how carefully you dig.
Affiliate disclosure: Akermin earns a commission from qualifying Amazon purchases made through links on this page. Our editorial picks are based on documented specifications and owner feedback, not commissions.
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