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Klein Tools ET310 Digital Circuit Breaker Finder

A transmitter/receiver kit that reduces trial-and-error when mapping circuits in apartments and common areas.

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Best fit

Who this item is for

Identifying which breaker serves a receptacle before maintenance or troubleshooting.

Before you buy

Know the limitation

Use only within the tool’s ratings and follow electrical safety procedures. Breaker identification does not make a circuit safe to work on.

Why you need it

Why building owners keep this on hand

Klein Tools ET310 Digital Circuit Breaker Finder is useful for building ownership because routine decisions are easier when staff can measure, trace or see the condition before opening finishes or calling multiple trades. A transmitter/receiver kit that reduces trial-and-error when mapping circuits in apartments and common areas. Identifying which breaker serves a receptacle before maintenance or troubleshooting. In day-to-day property operations, tools like this help document existing conditions, narrow down a complaint, communicate better with contractors and avoid unnecessary exploratory damage. They can also help an owner preserve photographs or measurements when a condition may later need to be explained to a tenant, insurer, engineer or code professional. The tool itself does not provide a professional opinion or legal certification. Use only within the tool’s ratings and follow electrical safety procedures. Breaker identification does not make a circuit safe to work on. Use it as a screening and documentation aid, keep notes of what was observed, and escalate to the appropriate licensed professional whenever the condition involves structural, electrical, fire-safety, gas, plumbing or other regulated work.

Useful features

Why it belongs in the Building Owner Tools Catalog

✓ Transmitter + receiver
✓ Breaker tracing
✓ Integrated GFCI test

We do not claim independent laboratory testing of every product. Building Owner Tools Catalog selections are based on manufacturer-published specifications, practical fit for common building use cases and category coverage. Always verify current specifications with the manufacturer or retailer.

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