Klein Tools ET310 AC Circuit Breaker Finder, Electric and Voltage Tester with Integrated GFCI Outlet Tester

Q: Why don’t they have one for high voltages?

What do you mean by high voltage? If you’re looking for something above 277/480, you’re going to want to spend more than $50. Otherwise you’re going to get Yourself killed

Q: Is the switch made so it won't turn on accidentally in a tool box?

The pushbutton to turn on the unit is surrounded by a raised plastic lip. The button sits flush with this lip. If something in your toolbox pushes right up against the button hard enough it could possibly turn on. You might consider getting a small zippered pouch such as the Klein Tools 69401 to protect the tester and help keep it from being accidentally turned on.

Q: Will it work if outlet has no power?

No it will not work - it has to have a current to pick up the signal at the breaker box.

Product ID: 122902673

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Details

Brand
KLEIN TOOLS
Power Source
Battery
Style
Circuit Finder
Color
Circuit Finder
Item Weight
7.2 Ounces

⚡Accurate AC circuit detection

🔊Audible + visual breaker alerts

🔌Integrated GFCI outlet tester

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Klein Tools ET310 AC Circuit Breaker Finder, Electric and Voltage Tester with Integrated GFCI Outlet Tester

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Klein Tools 69411 Circuit Breaker Finder Accessory Kit, Circuit Breaker Leads and Adapters

Description

⚡ Find your breaker fast, test with confidence, and stay shock-safe!

COMPACT DOCKING DESIGN - Transmitter docks neatly into receiver for easy storage and zero lost parts.
BUILT IN GFCI SAFETY CHECK - Test GFCI outlets on the spot to ensure your home’s electrical safety is up to code.
PINPOINT BREAKER PRECISION - Locate the exact circuit breaker in seconds with dual transmitter-receiver tech.
CLEAR VISUAL AUDIBLE SIGNALS - Never guess again—intuitive lights and sounds confirm your breaker match.
UNIVERSAL NORTH AMERICAN COMPATIBILITY - Works seamlessly on 90-120V AC circuits with grounded 3-pin plug design.

The KLEIN TOOLSET310 is a battery-powered, dual-component AC circuit breaker finder and voltage tester designed for professional-grade electrical troubleshooting. Featuring a transmitter that plugs into standard North American outlets and a receiver that scans panels with clear visual and audible signals, it ensures precise breaker identification on 90-120V circuits. Integrated GFCI outlet testing adds an essential safety layer, while the compact docking system keeps tools organized and ready for action.

Specifications

Brand	KLEIN TOOLS
Power Source	Battery Powered
Style	Circuit Breaker Finder
Color	Circuit Breaker Finder
Item Weight	7.2 Ounces
Item dimensions L x W x H	10.96 x 2.16 x 1.39 inches
Min. Operating Voltage	90 Volts
Maximum Operating Voltage	120 Volts
UPC	092644692406
Manufacturer	Klein Tools
Global Trade Identification Number	00092644692406
Part Number	ET310
Item Weight	7.2 ounces
Product Dimensions	10.96 x 2.16 x 1.39 inches
Item model number	ET310
Batteries	1 9V batteries required. (included)
Material	PC & PC-ABS housing and electronic components
Pattern	Breaker Kit
Voltage	120 Volts
Item Package Quantity	1
Special Features	Transmitter docks in Receiver Transmitter integrated GFCI outlet tester in receiver
Included Components	Includes Transmitter, Receiver, user manual, and 9V battery for Receiver
Batteries Included?	Yes
Batteries Required?	No