Uploaded July 2026 | Updated September 2026, 3 weeks ago

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Banggood sent me this Mastech MS5902 Automatic Circuit Breaker Finder to take a look at.

In addition to tracing wiring and identifying circuit breakers, it can also verify that outlets are wired correctly and can test GFCIs for correct operation.

Join me while I run it through it's paces and take a look what's inside.

If you want one after watching the video, here's the link:

MS5902 Automatic Circuit Breaker Finder -- https://ban.ggood.vip/1n9Wc
Coupon code: BGefa3f1
More measurement instrument --https://ban.ggood.vip/1mYip

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#ElectronicsCreators
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This isn't the only way to do it.
It's probably not the best way to do it.
But it's how I did it.