Will this tester work reliably on new circuits with afci, gfi or combo breakers? I dont see anything from Klein saying it wont but some had problems

Mine turned red when held up to any of the AFCI breakers in my box, regardless of which socket I had the transmitter plugged into.

Wil this tool find other recepticals on the circuit?

It will find everything on the circuit BUT you will have to plug the transmitter into each outlet or using the socket adapter included with the accessories kit into a light socket of a lamp. It's really pretty easy process though and I didn't do what I just described in the previous sentence. Once I found the breaker from the outlet I had plugged the transmitter into, I flipped the breaker off, checked to make sure the outlet was indeed dead, then checked each outlet or light switch in the room and that told me everything on that circuit breaker. When I went to an outlet and plugged the transmitter in, and it lit up, then I knew I was on a different breaker, and then that began the process of finding the breaker for that outlet, etc. I hope this makes sense. Good luck. It really is a great product and I had no issues at all. The time consuming part was trudging up flights of stairs and to each room after turning a breaker off to make sure I got the right one. But now every outlet and switch in the house is mapped to a breaker.

Why is this exact kit available at the same store for two different prices? One is $3 more than the other for the same ET310 and accessories kit

I think stores do this in hopes someone will just pay more. Unless ther is something added, I would stick with the original item.

Will this work if the breaker is bad?

Yes, it should because the wires are still connected even if breaker is bad

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Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, GFCI Outlet Tester, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411

Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, GFCI Outlet Tester, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411

Product ID: 282851949

Details

Brand
KLEIN TOOLS
Color
Finder +
Item Weight
15.52 ounces
Power Source
Battery
Style
2-Piece Kit

⚡Accurate circuit ID 90-120V

🔊Clear audible & visual signals

🧰Complete 2-piece pro kit

₩187905

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Description

⚡ Master your circuits, impress your crew.

DUAL TEST POWERHOUSE - Combine circuit finding with built-in GFCI outlet testing for total electrical confidence.
PINPOINT CIRCUITS IN SECONDS - Save hours with precise breaker detection—no guesswork, just results.
PRO GRADE DURABILITY DESIGN - Crafted by Klein Tools with 160+ years of trusted American engineering and rugged build quality.
VERSATILE READY FOR ANY JOB - Works seamlessly on residential & commercial 90-120V AC circuits—your all-in-one solution.
EFFORTLESS ONE PERSON OPERATION - Lightweight, battery-powered kit with adapters and clear indicators—get the job done solo and look like a pro.

The Klein Tools 80016 Circuit Breaker Finder Tool Kit is a professional-grade, battery-powered 2-piece set designed to quickly and accurately identify circuit breakers on 90-120V AC circuits. Featuring clear visual and audible signals, it includes a digital breaker finder with a built-in GFCI outlet tester and versatile adapters for bare wires and fixtures. Trusted for over 160 years, Klein Tools delivers durable, American-made precision tools that save time and reduce frustration for both DIYers and professionals.

Specifications

ASIN	B08VWCSG7G
Best Sellers Rank	#1,050 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2 in Circuit Testers
Brand Name	KLEIN TOOLS
Color	Finder + Accessories
Compatible Devices	Standard electrical outlets, fixtures, and circuit panels
Customer Reviews	4.7 4.7 out of 5 stars (11,411)
Global Trade Identification Number	00092644800160
Included Components	Circuit Breaker Finder Tool Kit, 2-Piece
Item Dimensions	15 x 10 x 3 inches
Item Type Name	Klein Tools 80016 Circuit Breaker Finder Tool Kit with Accessories, 2-Piece Set, Includes Cat. No. ET310 and Cat. No. 69411
Item Weight	15.52 ounces
Manufacturer	Klein Tools
Maximum Operating Voltage	120 volts_of_alternating_current
Measurement Type	Ohmmeter
Minimum Operating Voltage	90 volts
Model	80016
Part Number	80016
Power Source	Battery Powered
Specification Met	UL
Style Name	2-Piece Kit
UPC	092644800160
Unit Count	1 Count
Upper Temperature Rating	60 °C

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₩187905

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Korea.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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