Skip to main content
PetLawn & GardenTruck & AutomotiveClothingPoultryHeating & CoolingHorseSporting GoodsOutdoor Power EquipmentFencing & GatesLivestockOutdoor LivingPet & Animal PharmacyToolsHome ImprovementFarm & RanchBoots & ShoesTrailers & TowingHome Decor & FurnitureWild Birds & WildlifeToysGift CardsServices Propane RefillTrailer RentalGarden CenterFeed CenterSame Day DeliveryPetVet ClinicPet WashGrooming at PetsenseDog Training at PetsenseTractor Supply RxPet InsuranceWag!

"Savings and Offers"

Weekly AdSaleClearance

"More Options"

Weekly AdWhat's NewTractor Supply AppEarn Rewards with Neighbor's ClubHometown HeroesLife Out Here BlogTSC Exclusive BrandsTop BrandsClearance ItemsBattery FinderOutdoor Power Equipment Parts FinderHitch Finder

Spend $49.99 to unlock Free Delivery on most orders

|
Learn More
Order statusTSC Credit CardsWhat’s newPetsenseWeekly Ad
​

Sign In / Enroll

Get rewarded!

​
Menu

Search

Home

Sign In

Cart
5.0
(5)
5.0 out of 5 stars. 5 reviews
A woman outside with a dog
A woman outside with a dog
  1. Home
  2. /
  3. Tools
  4. /
  5. Hand Tools
  6. /
  7. Electrical Tools
  8. /
  9. Voltage Testers
  10. /

  11. Klein Tools 110/125VAC GFCI Outlet Tester

  1. Home
  2. /
  4. /
  5. Voltage Testers

Klein Tools 110/125VAC GFCI Outlet Tester

Shop all Klein Tools

  • New Arrival

Klein Tools 110/125VAC GFCI Outlet Tester

Item # 1895313

Klein Tools Klein Tools 110/125VAC GFCI Outlet Tester
Klein Tools Klein Tools 110/125VAC GFCI Outlet Tester
$19.99

Notice:
This Item cannot be shipped to AK, HI.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

Shop all Klein Tools

  • New Arrival

Klein Tools 110/125VAC GFCI Outlet Tester

Item # 1895313

Klein Tools Klein Tools 110/125VAC GFCI Outlet Tester
Klein Tools Klein Tools 110/125VAC GFCI Outlet Tester

$19.99

Shopping at

Grassland (franklin) TN

Delivery to

Free standard delivery on online footwear & Clothing purchases of $49 and over.

​
Notice:
This Item cannot be shipped to AK, HI.
Neighbor's Club logo
Neighbor’s Club Members earn points with purchases.

Sign in or Join Now

The Klein Tools GFCI Outlet Tester is designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the durable outlet tester helps determine the wiring condition in the outlet based on lights results. This outlet tester indicates conditions such as open ground, reverse polarity, open hot, open neutral and hot/ground reversed.

  • Works on GFCI outlets and confirms operation of the ground fault protective device
  • Outlet tester is built to withstand a 6.6-ft. (2m) drop
  • Operating temperature of 32 degrees to 140 degree Fahrenheit (0 degrees to 40 degrees Celsius)
  • Nominal voltage; 110/125V AC at 50/60Hz in a 3-wire outlet
  • Outlet tester detects the most common wiring problems in standard and GFCI receptacles
BrandKlein Tools
Country of OriginImported
Product Height1.625 in.
Product Length3 in.
Product Weight0.123 lb.
Product Width1.875 in.
WarrantyTwo years from the date of purchase
Manufacturer Part NumberRT210
No questions have been asked about this product.

No questions have been asked about this product.

Q&As

No questions have been asked about this product.

No questions have been asked about this product.

Similar Items

  1. Klein Tools 90-120V Digital Circuit Breaker Finder with GFCI Outlet Tester
    4.2 out of 5 stars with 41 reviews
    4.2 (41)

    Klein Tools 90-120V Digital Circuit Breaker Finder with GFCI Outlet Tester

    $59.99
  2. Klein Tools Non-Contact Voltage Tester Pen, 50 to 1000 V AC
    4.6 out of 5 stars with 12 reviews
    4.6 (12)

    Klein Tools Non-Contact Voltage Tester Pen, 50 to 1000 V AC

    $19.99
  3. Klein Tools Dual Range Non-Contact Voltage Tester with Flashlight, 12-1000V AC
    3.6 out of 5 stars with 22 reviews
    3.6 (22)

    Klein Tools Dual Range Non-Contact Voltage Tester with Flashlight, 12-1000V AC

    $29.99
  4. Cambridge 12V Electrical Tester, Hi/Lo Voltage
    4.7 out of 5 stars with 3 reviews
    4.7 (3)

    Cambridge 12V Electrical Tester, Hi/Lo Voltage

    $19.99
  5. Power Gear Receptacle Tester
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Power Gear Receptacle Tester

    $11.99
  6. Performance Tool 6/12/24V AC/DC Heavy-Duty Circuit Tester
    4.2 out of 5 stars with 10 reviews
    4.2 (10)

    Performance Tool 6/12/24V AC/DC Heavy-Duty Circuit Tester

    $5.99
  7. Top Rated
    Gardner Bender 50-600V AC Voltage Circuit Alert Non-Contact Voltage Tester
    5.0 out of 5 stars with 4 reviews
    5.0 (4)

    Gardner Bender 50-600V AC Voltage Circuit Alert Non-Contact Voltage Tester

    $24.99
  8. Klein Tools 1/8 in. x 50 ft. Steel Fish Tape
    4.0 out of 5 stars with 2 reviews
    4.0 (2)

    Klein Tools 1/8 in. x 50 ft. Steel Fish Tape

    $29.99
  9. Klein Tools Digital Multimeter, Manual-Ranging, 600 V
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Klein Tools Digital Multimeter, Manual-Ranging, 600 V

    $37.99
  10. Klein Tools AC/DC Digital Clamp Meter, Auto-Ranging, 400A
    4.3 out of 5 stars with 13 reviews
    4.3 (13)

    Klein Tools AC/DC Digital Clamp Meter, Auto-Ranging, 400A

    $109.99
  11. Klein Tools Klein-Kurve Wire Stripper/Cutter, 8-20 AWG
    4.6 out of 5 stars with 18 reviews
    4.6 (18)

    Klein Tools Klein-Kurve Wire Stripper/Cutter, 8-20 AWG

    $24.99
  12. Top Rated
    Klein Tools Forged Steel Wire Crimper, Cutter, Stripper
    4.8 out of 5 stars with 4 reviews
    4.8 (4)

    Klein Tools Forged Steel Wire Crimper, Cutter, Stripper

    $39.99

Items You May Like

  1. Top Rated
    DEWALT 1/2 in. Drive SAE Assorted Deep Impact Socket Set, 7 pc.
    5.0 out of 5 stars with 3 reviews
    5.0 (3)

    DEWALT 1/2 in. Drive SAE Assorted Deep Impact Socket Set, 7 pc.

    $39.99
  2. Top Rated
    Klein Tools 10-18 AWG Solid Wire Stripper/Cutter
    4.8 out of 5 stars with 11 reviews
    4.8 (11)

    Klein Tools 10-18 AWG Solid Wire Stripper/Cutter

    $19.99
  3. MagnetPAL Heavy-Duty Multi-Purpose Neodymium Anti-Rust Magnet, Red
    4.7 out of 5 stars with 23 reviews
    4.7 (23)

    MagnetPAL Heavy-Duty Multi-Purpose Neodymium Anti-Rust Magnet, Red

    $12.99
  4. JobSmart 15 in. Hand Saw
    3.6 out of 5 stars with 7 reviews
    3.6 (7)

    JobSmart 15 in. Hand Saw

    $15.99
  5. Top Rated
    JobSmart 9 pc. SAE Extra Long Arm Ball Point Hex Key
    5.0 out of 5 stars with 4 reviews
    5.0 (4)

    JobSmart 9 pc. SAE Extra Long Arm Ball Point Hex Key

    $9.99
  6. Gardner Bender 500V Digital Multimeter, 3 Function, 11 Range, Tests AC/DC Voltage & Resistance
    4.0 out of 5 stars with 11 reviews
    4.0 (11)

    Gardner Bender 500V Digital Multimeter, 3 Function, 11 Range, Tests AC/DC Voltage & Resistance

    $32.99
  7. INTERTOOL Mechanics Tool Set, 100 pc.
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    INTERTOOL Mechanics Tool Set, 100 pc.

    $139.99
  8. JobSmart 1-1/8 in. Combination Wrench
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    JobSmart 1-1/8 in. Combination Wrench

    $16.99
  9. Beta Tools 42MP 12-Point 15 Deg. Offset Combination Wrench, Compact Head, Metric, 13mm
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Beta Tools 42MP 12-Point 15 Deg. Offset Combination Wrench, Compact Head, Metric, 13mm

    $19.79
    Was $21.99Save $2.20
  10. JobSmart 7 in. Linesman Pliers
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    JobSmart 7 in. Linesman Pliers

    $19.99
  11. GEARWRENCH 11/32 in. 12 pt. Long Pattern Combination Wrench
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    GEARWRENCH 11/32 in. 12 pt. Long Pattern Combination Wrench

    $12.59
    Was $13.99Save $1.40
  12. Beta Tools 142AS Reversible Ratcheting Combination Wrench, 5/8 in.
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    Beta Tools 142AS Reversible Ratcheting Combination Wrench, 5/8 in.

    $44.99

Customers Also Bought

  1. DEWALT 3 in. Drive Impact-Ready Locking Magnetic Extension
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    DEWALT 3 in. Drive Impact-Ready Locking Magnetic Extension

    $17.99
  2. DEWALT 5 in. 20V MAX Brushless Random Orbital Sander, Tool Only
    4.6 out of 5 stars with 127 reviews
    4.6 (127)

    DEWALT 5 in. 20V MAX Brushless Random Orbital Sander, Tool Only

    $179.99
  3. Top Rated
    CLC 16 in. 22-Pocket BigMouth Tote Bag, Large
    5.0 out of 5 stars with 4 reviews
    5.0 (4)

    CLC 16 in. 22-Pocket BigMouth Tote Bag, Large

    $46.99
  4. Top Rated
    DEWALT 1/2 in. Drive SAE/Metric Combination Socket Set, 23 pc.
    4.9 out of 5 stars with 14 reviews
    4.9 (14)

    DEWALT 1/2 in. Drive SAE/Metric Combination Socket Set, 23 pc.

    $69.99
  5. DEWALT 25 ft. x 1-1/4 in. Atomic Tape Measure
    4.7 out of 5 stars with 101 reviews
    4.7 (101)

    DEWALT 25 ft. x 1-1/4 in. Atomic Tape Measure

    $19.99
  6. Dremel 1/4 in. Hex Electric Screwdriver
    4.7 out of 5 stars with 100 reviews
    4.7 (100)

    Dremel 1/4 in. Hex Electric Screwdriver

    $49.99
  7. Crescent 7 in. and 10 in. Locking Pliers, 2 pc.
    4.5 out of 5 stars with 2 reviews
    4.5 (2)

    Crescent 7 in. and 10 in. Locking Pliers, 2 pc.

    $26.99
  8. JobSmart 1/2 Drive 20-150 ft.-lb. Micrometer TW
    0.0 out of 5 stars with 0 reviews
    0.0 (0)

    JobSmart 1/2 Drive 20-150 ft.-lb. Micrometer TW

    $44.99
  9. Makita Impact XPS Square 2 in. Socket Adapter Set, 3 pc.
    4.2 out of 5 stars with 5 reviews
    4.2 (5)

    Makita Impact XPS Square 2 in. Socket Adapter Set, 3 pc.

    $15.99
  10. PORTER-CABLE 20V Max Cordless Lithium Reciprocating Saw
    4.5 out of 5 stars with 87 reviews
    4.5 (87)

    PORTER-CABLE 20V Max Cordless Lithium Reciprocating Saw

    $99.00
  11. PORTER-CABLE Cordless 20V Max Drill/Impact Driver Combo Tool Kit, 2 pc.
    4.6 out of 5 stars with 727 reviews
    4.6 (727)

    PORTER-CABLE Cordless 20V Max Drill/Impact Driver Combo Tool Kit, 2 pc.

    $149.00
  12. DEWALT Assorted Impact-Ready Screwdriver Set with ToughCase+ System, 40 pc.
    4.7 out of 5 stars with 48 reviews
    4.7 (48)

    DEWALT Assorted Impact-Ready Screwdriver Set with ToughCase+ System, 40 pc.

    $33.99
    Was $39.99Save $6.00

Reviews

Rating Snapshot

Select a row below to filter reviews.

5 starsstars

5
5 reviews with 5 stars.

4 starsstars

0
0 reviews with 4 stars.

3 starsstars

0
0 reviews with 3 stars.

2 starsstars

0
0 reviews with 2 stars.

1 starstars

0
0 reviews with 1 star.

Overall Rating

5.0
5 out of 5 (100%) reviewers recommend this product

Review this Product

Select to rate the item with 1 star. This action will open submission form.
Select to rate the item with 2 stars. This action will open submission form.
Select to rate the item with 3 stars. This action will open submission form.
Select to rate the item with 4 stars. This action will open submission form.
Select to rate the item with 5 stars. This action will open submission form.
Adding a review will require a valid email for verification
  • purchase
  • satisfaction
1 to 4 of 5 Reviews .
1 – 4 of 5 Reviews
Sort by
Most Recent
wll2008
Livingston, TX
Review 1
Age18 to 24
GenderMale
5 out of 5 stars.

Simple, Reliable, and Easy to Use

a month ago
I bought the Klein RT210 GFCI Outlet Tester as part of the tool collection I'm putting together before I head to the NRVTA in a couple of months, and I'm glad I did. It's a simple tool, but it's very useful and easy to use. Just plug it into an outlet, and the lights make it easy to understand whether the outlet is wired correctly or if there's a problem. The tester feels well-made and durable, and it's small enough to keep in a tool bag without taking up much space. I like having a quick and easy way to check outlets without guessing. My grandpa and my dad have both used Klein Tools for years, and they've always trusted the brand because their tools last and perform well. That family experience is one of the reasons I chose Klein when building my own tool collection. Overall, I'm very happy with the RT210 GFCI Outlet Tester. It's easy to use, works exactly as it should, and is a great tool to have in any toolbox.

Yes, I recommend this product.

Originally posted on Klein Tools

Leo12
Del Rio TX
Review 1
Age18 to 24
GenderMale
5 out of 5 stars.

Excelent Product

4 years ago
I bought this a month ago, and it's a wonderful product, love it!

Yes, I recommend this product.

Originally posted on Klein Tools

Chris H
46280
Review 1
Age45 to 54
GenderMale
5 out of 5 stars.

Small and perfect tool

4 years ago
I got this last year and it is a perfect tool to check outlets. We upgraded all the outlets and switches in the house and this really helped to make the job faster.

Yes, I recommend this product.

Originally posted on Klein Tools

Desert hawk129
Iowa
Review 1
Age25 to 34
GenderMale
5 out of 5 stars.

Great little tool to have

5 years ago
Easy to use and indicator lights are bright enough to see during the day.

Yes, I recommend this product.

Originally posted on Klein Tools

Get the top deals, latest trends and more
Sign up for emails from Tractor Supply today.
First Name*
Last Name*
Email*

Customer Support

  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  

    (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

About Us

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

Work With Us

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

Neighbor's Club

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

Credit Center

  • TSC Credit Card

  • Klarna

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More

Stay Connected

Connect & Share with the Tractor Supply Community.

Tractor Supply App

Shop on the go with the Tractor Supply App

Learn More
  • Order Status

  • Return Policy

  • Delivery Options

  • Tax Exemptions

  • Frequently Asked Questions

  • Contact Us

  • Recall Notices

  • Call:  (877) 718-6750

  • Mon - Sat: 7am - 9pm CT

  • Sun: 8am - 7pm CT

  • Closed Christmas Day

  • Who We Are

  • Investor Relations

  • Stewardship

  • Community

  • Military Support

  • Product Catalog

  • Tractor Supply Stores

  • .Pharmacy Verified Website

  • Careers

  • Sponsorship

  • Affiliate Program

  • Potential Vendor Partners

  • Vendor Information

  • Tractor Supply Media Network

  • About

  • Rewards

  • Hometown Heroes

  • Frequently Asked Questions

  • Terms & Conditions

  • TSC Credit Card

  • Klarna

Connect & Share with the Tractor Supply Community.

Shop on the go with the Tractor Supply App

Learn More
  • Privacy policy
  • Your Privacy Choices
  • Terms and Conditions
  • California Transparency Act
  • Legal Notices
  • Accessibility
  • Responsible Disclosure Statement
  • Surprise (Balance) Medical Billing Disclosure
  • Transparency in Coverage
  • Human Rights Policy
  • Vendor Code of Conduct
  • California Notice of Collection
  • Privacy Requests

© 2026, Tractor Supply Co. All Rights Reserved.