- GFCI electrical circuit tester inspects GFCI devices
- Large LCD display shows voltage, wire faults, and GFCI trip time
- Identifies common wiring faults on North American 120V outlets
- See More Details
Frequently Bought Together
Product Overview
GFCI Receptacle Tester
Klein Tools’ Cat. No. RT210 Detects the most common wiring problems in standard and GFCI receptacles
GFCI Receptacle Tester with LCD
Klein Tools’ Cat. No. RT250 is an electrical circuit tester that tests the wiring conditions at an electrical outlet and inspects GFCI devices, and displays the results
AFCI / GFCI Outlet Tester
Klein Tools’ Cat. No. RT310 is an electrical tester that tests the wiring condition at an electrical outlet, and inspects and checks AFCI and GFCI devices
GFI Outlets
The Cat. No. RT210 receptacle tester works on GFI outlets and confirms operation of the ground fault protective device
LCD Readouts
The Cat. No. RT250 tester features LCD readout of voltage, wire fault, and GFCI time to trip breaker
Visual Indicator
The Cat. No. 310 outlet tester tests AFCI devices by simulating arc fault conditions and GFCI devices by simulating ground fault conditions, and delivers clear visual indicating of the wiring condition at the electrical outlet
Durable
All of Klein Tools’ receptacle testers are built tough enough to withstand a 2 meter drop
Quickly Determine Results
A convenient chart on the Cat. No. RT210 tester helps determine wiring condition in outlet, based on LED lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.
Nominal Voltage
Klein Tools Cat. No. RT210 tests 110/125V AC at 50/60Hz in 3-wire outlet
Safety
Klein Tools Cat. No. RT250 meets or exceeds CAT II 135V safety rating
Tests
The Cat. No. RT250 Tester is designed to inspect and test GFCI devices for North American 120V electrical outlets and is capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology)
Patent Pending Technology
Klein Tools Cat. No. RT310 tester is capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology)
Safety
Cat. No. RT310 tester meets or exceeds CATIII 135V safety rating, making it applicable to test and measuring circuits connected to the distribution part of the building’s low-voltage MAINS installation
- GFCI Receptacle Tester features a large backlit LCD readout of voltage and clear indication of wiring conditions
- LCD readout shows the time required to trip a GFCI device
- Detect and identify common wiring faults
- Patent pending detection of Open Neutral Open Ground wiring fault
- Auto-Hold is convenient for hard-to-reach outlets
- Bright green and red LEDs illuminate for visual indicators
- CAT II 135V safety rating
- Durable 6.6 ft. (2 m) drop protection
- For use on 3-wire, North American 120V electrical outlets only
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- California residents
Info & Guides
Product Overview
- GFCI electrical circuit tester inspects GFCI devices
- Large LCD display shows voltage, wire faults, and GFCI trip time
- Identifies common wiring faults on North American 120V outlets
Compare Similar Specialty Meters
 | |  |  | |
| Brand | Klein Tools | Klein Tools | Klein Tools | Klein Tools |
| Name | Circuit Breaker Finder Accessory Kit | GFCI Receptacle Tester with LCD | USB Digital Meter with USB-A and USB-C | AFCI/GFCI Outlet Tester |
| Price | $1495 | $1997 | $2999 | $3997 |
| Ratings | (179) | (128) | (17) | (45) |
| Test Meter Type | Circuit Breaker Finder | Specialty Meter/Tester | Specialty Meter/Tester | Specialty Meter/Tester |
| View Product | View Product | View Product | View Product |
Compare Similar Specialty Meters
| | | | |
| Brand | Klein Tools | Klein Tools | Klein Tools | Klein Tools |
| Name | Circuit Breaker Finder Accessory Kit | GFCI Receptacle Tester with LCD | USB Digital Meter with USB-A and USB-C | AFCI/GFCI Outlet Tester |
| Price | $1495 | $1997 | $2999 | $3997 |
| Ratings | (179) | (128) | (17) | (45) |
| Test Meter Type | ||||
| View Product | View Product | View Product | View Product |
Key Features
GFCI Receptacle Tester
Klein Tools’ Cat. No. RT210 Detects the most common wiring problems in standard and GFCI receptacles
GFCI Receptacle Tester with LCD
Klein Tools’ Cat. No. RT250 is an electrical circuit tester that tests the wiring conditions at an electrical outlet and inspects GFCI devices, and displays the results
AFCI / GFCI Outlet Tester
Klein Tools’ Cat. No. RT310 is an electrical tester that tests the wiring condition at an electrical outlet, and inspects and checks AFCI and GFCI devices
GFI Outlets
The Cat. No. RT210 receptacle tester works on GFI outlets and confirms operation of the ground fault protective device
LCD Readouts
The Cat. No. RT250 tester features LCD readout of voltage, wire fault, and GFCI time to trip breaker
Visual Indicator
The Cat. No. 310 outlet tester tests AFCI devices by simulating arc fault conditions and GFCI devices by simulating ground fault conditions, and delivers clear visual indicating of the wiring condition at the electrical outlet
Durable
All of Klein Tools’ receptacle testers are built tough enough to withstand a 2 meter drop
Quickly Determine Results
A convenient chart on the Cat. No. RT210 tester helps determine wiring condition in outlet, based on LED lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.
Nominal Voltage
Klein Tools Cat. No. RT210 tests 110/125V AC at 50/60Hz in 3-wire outlet
Safety
Klein Tools Cat. No. RT250 meets or exceeds CAT II 135V safety rating
Tests
The Cat. No. RT250 Tester is designed to inspect and test GFCI devices for North American 120V electrical outlets and is capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology)
Patent Pending Technology
Klein Tools Cat. No. RT310 tester is capable of detecting a dual-open wiring fault with simultaneous open neutral and open ground wires (patent pending technology)
Safety
Cat. No. RT310 tester meets or exceeds CATIII 135V safety rating, making it applicable to test and measuring circuits connected to the distribution part of the building’s low-voltage MAINS installation
Specifications
Dimensions
Details
Warranty / Certifications
Questions & Answers
Will this detect a false or bootleg ground?
Asked by Ed November 21, 2020It says that it will detect miswiring and has indicators for improper grounding. I didn't have this situation so could not verify it.
Is there a users manual?
Asked by Andrew October 12, 2020Yes, it comes with a Manual.
Customer Reviews
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