About

Ethernet Cable Tester Guide exists because the cable tester market is three tools wearing one name, and most buying advice reads spec sheets instead of answering the buyer's actual question. The method here is sorting by the question: is this cable dead (wiremap tier), where is the fault and is the port powering it (length and POE tier), prove the whole link in writing (professional tier).

We do not operate a cabling laboratory and we do not claim bench time we did not do. Specifications come from public product pages, tier boundaries come from what each capability can and cannot settle, and every product link goes to an Amazon search so prices and ratings are read at their source - never copied here where they would go stale.

The guides are updated when models change or the market moves, with dated notes rather than silent rewrites. Corrections with measurements beat opinions - write to [email protected].

Three commitments hold the whole site together. First, no invented measurements: every capability claim traces to a public specification, and the difference between "the listing says" and "this is certified" is written out, not blurred. Second, tier boundaries are falsifiable - the tier table says exactly what each price class can and cannot settle, so a reader can disprove the sorting with one visit to a store page. Third, staleness is a bug: when a model is discontinued or a tier boundary moves, the page changes with a date, because a buying guide that lies by omission is worse than none.