Refurbished Circuit Testers — 30 Deals

30 open-box and refurbished Circuit Testers deals are live for shoppers in the US right now, with discounts averaging 16% off retail. Prices range from $5 to $63, and every listing shows the seller's condition grade, current price, savings versus list price and stock status — so you can compare before you buy. Top brands on sale include KLEIN TOOLS, ALKOO, ANENG and Southwire. Inventory syncs from Amazon and other partner stores throughout the day; open-box stock is usually one-of-a-kind, so the best deals sell out fast.

30 live US listings.

USA

Southwire

Southwire Tester; Continuity PRO 40040S

$27⁷⁵

KAIWEETS Circuit Breaker Finder with LCD Display, GFCI Outlet Tester, Electrical Circuit Tracer Tool with NCV Test & Flashlight, Includes Carrying Case - KT301

$44⁹⁹

Klein Tools ET310KIT AC Circuit Breaker Finder Kit, Electric Tester, GFCI Tester, Leads, Adapters and Case

$61⁵⁸

Klein Tools 80064 AC Circuit Breaker Kit with GFCI Digital Circuit Breaker Finder, Non-Contact Voltage Tester Pen and Zipper Bag, 3-Piece

$62⁵²

SQECH Circuit Breaker Finder Tool Kit GFCI Outlet Tester NCV Detector for 90-135V AC Electrical Circuit Tracer with Dual LCD Display Adapter Storage Bag Batteries Screwdriver

Used – Mint

$42⁷⁴

$49.99

-15% Save $7.25

Update: 12 hours 2 mins

Buy at Amazon.com

USA

Gtrsiow

Automotive Circuit Fault Probe Tester, Portable High-Precision 20A 48V Car Circuit Probe Tester with Led Display & Front Lighting, Car Relay Fuse Blade Checker for Various Vehicles

$12⁰²

Non Contact Voltage Tester Outlet Receptacle Detector Dual Range AC 2-440V,50Hz-60Hz Live/Neutral Wire Tester with LCD Display,Breakpoint Finder,Light Fuse Checker,Circuit Polarity Wall Plug Tool

$11⁵¹

RAIACE Hard Travel Storage Case Compatible with Klein Tools ET310 AC Circuit Breaker, Finder & 80041 Outlet Repair Tool Kit & RT250 GFCI Receptacle Tester. Home Tester Kit Bag. (case only) - Orange

$14⁵⁴

Ansbell Car Circuit Tester Fuse Tester Automotive Current Tester Blade Fuse Max 48V, Circuit Measure AmpFuse Buddy, Automotive Blade Checker Fuses Box Current Test

$11²⁶

Klein Tools RT310 Outlet Tester, AFCI and GFCI Receptacle Tester for North American AC Electrical Outlets

Used – VeryGood

$35³²

$39.97

-12% Save $4.65

Update: 19 hours 14 mins

Buy at Amazon.com

USA

ALKOO

ALKOO Case Compatible with Klein Tools ET310 AC Circuit Breaker Finder and Integrated GFCI Outlet Tester, with Mesh Pocket Inside for Accessories (Grey)

$14⁹⁹

yorpyep Car Circuit Tester, Circuit Inspection Pen for Resolving Positive and Negative, Sensory Tester for Fuse and Generator with LED Screen Stretchable Wire, Universal for 3 6 12 24V (Black & Red)

$5⁷³

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

$40⁹²

Klein Tools ET310TRANS ET310 Circuit Breaker Finder Replacement Transmitter, Digital Circuit Breaker Finder, Integrated GFCI Outlet Tester

Used – Mint

$14¹⁰

$17.44

-20% Save $3.34

Update: 9 hours 44 mins

Buy at Amazon.com

USA

Ideal Industries

Ideal Circuit Breaker Finder Kit, Finds Circuits and Tests GFCI

Used – Mint

$61⁷⁴

$64.99

-5% Save $3.25

Update: 1 hour 53 mins

Buy at Amazon.com

USA

KLEIN TOOLS

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

$56⁹⁸

Klein Tools 80025 Outlet Tester Kit with GFCI Tester and Non-Contact Voltage Test Pen, 2-Piece

$24²³

Circuit Breaker Finder with LCD Display, GFCI Outlet Tester, 90-130V Electrical Circuit Tracer Tool with NCV Tset & Flashlight, Includes Carrying Case with Adapter, Alligator Clips -VCT03P

$41³⁷

Wire Tracer Electrical,Circuit Tracer,Automotive Electrical Open&Short Finder Circuit Tester,Wire Cable Tracker Electrical,Automotive Wire Tester Electrical Tool DC 6-42V(Batteries 2PCS Included)

Used – VeryGood

$13⁵¹

$15.99

-16% Save $2.48

Update: 5 hours 11 mins

Buy at Amazon.com

USA

KLEIN TOOLS

Klein Tools NCVT1PKIT Electrical Tester Kit with Non-Contact Low Voltage Test Pen, 50 to 1000V AC and GFCI Receptacle Tester, 2-Piece

$24⁸¹

Aproca Case Compatible with Klein Tools ET310 AC Circuit Breaker Finder & 80016 Circuit Breaker Finder Tool Kit & RT250 GFCI Outlet Tester, Portable Storage Bag for Accessories (Case Only)

$14⁹⁰

ALKOO Case Compatible with Klein Tools ET310 AC Circuit Breaker Finder and Integrated GFCI Outlet Tester, with Mesh Pocket Inside for Accessories (Black)

$19⁹⁹

Non Contact Voltage Tester Outlet Receptacle Detector Dual Range AC 2-440V,50Hz-60Hz Live/Neutral Wire Tester with LCD Display,Breakpoint Finder,Light Fuse Checker,Circuit Polarity Wall Plug Tool(Red)

Used – VeryGood

$14²⁵

$16.14

-12% Save $1.89

Update: 12 hours 56 mins

Buy at Amazon.com

USA

Triplett

Triplett ET30 Non-Contact Magnetic Field Detector

$13³¹

Circuit Testers open-box FAQ

How much can I save on open-box Circuit Testers?

Discounts on Circuit Testers at OpenBoxFox currently average 16% off retail across 30 live listings, with prices from $5 to $63. Savings are measured against the manufacturer's list price.

Are open-box and refurbished Circuit Testers safe to buy?

Yes — every listing shows the seller's condition grade (from open-box "Like New" to certified refurbished) before you buy. You purchase directly from the seller, such as Amazon, and that seller's standard return policy applies to your order.

Which Circuit Testers brands are on sale open-box right now?

The most-listed brands in Circuit Testers at the moment are KLEIN TOOLS, ALKOO, ANENG, Southwire and AWBLIN. New open-box inventory arrives daily, so brand availability changes often.

How often are Circuit Testers deals updated?

OpenBoxFox syncs Circuit Testers inventory from partner stores throughout the day. Sold-out listings are removed automatically and new deals appear shortly after we find them.