


About Klein Tools
As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.
Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day Since 1857.
Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring Problems
Klein Tools Receptacle Testers are designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the tester helps determine wiring condition in outlet, based on lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.
- GFCI Tester detects the most common wiring problems in standard and GFCI receptacles
- Works on GFCI outlets and confirms operation of the ground fault protective device
- Built to withstand a 6.6-foot (2m) drop
- Operating temp: 32-Degree to 140-Degree Fahrenheit (0-Degree to 40-Degree Celsius)
- Nominal Voltage: 110/125V AC at 50/60Hz in 3-wire outlet
FEATURES

110/125V AC electrical tester works on standard/GFCI receptacles

GFCI Outlet Tester with lights, indicates wiring problems

Indicates open ground, reverse polarity and other conditions
![]() Klein Tools RT310 Outlet Tester, AFCI and GFCI Receptacle Tester for North Am... | ![]() Klein Tools RT110 Outlet Tester, AC Electrical Receptacle Tester for North Am... | ![]() Klein Tools ET250 Voltage Meter, AC/DC Tester, Digital Multimeter, Low Voltag... | ![]() Klein Tools ET60 Voltage Tester, Tests AC / DC and Low Voltage, No Batteries ... | ![]() Klein Tools 11045 Wire Stripper/Cutter (10-18 AWG Solid), Made in USA | ![]() Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Teste... | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — no data | — | — | — | — | — |
| Mfg. No. | RT310 | RT110 | ET250 | ET60 | 11045 | RT250 |
| Description | Klein Tools RT310 Outlet Tester, AFCI and GFCI Receptacle Tester for North Am... | Klein Tools RT110 Outlet Tester, AC Electrical Receptacle Tester for North Am... | Klein Tools ET250 Voltage Meter, AC/DC Tester, Digital Multimeter, Low Voltag... | Klein Tools ET60 Voltage Tester, Tests AC / DC and Low Voltage, No Batteries ... | Klein Tools 11045 Wire Stripper/Cutter (10-18 AWG Solid), Made in USA | Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Teste... |

Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring Problems

About Klein Tools
As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship.
Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day Since 1857.

Klein Tools Receptacle Testers are designed to detect the most common wiring problems in standard and GFCI receptacles. A convenient chart on the tester helps determine wiring condition in outlet, based on lights results. Conditions indicated: open ground, reverse polarity, open hot, open neutral, hot/ground reversed.
- GFCI Tester detects the most common wiring problems in standard and GFCI receptacles
- Works on GFCI outlets and confirms operation of the ground fault protective device
- Built to withstand a 6.6-foot (2m) drop
- Operating temp: 32-Degree to 140-Degree Fahrenheit (0-Degree to 40-Degree Celsius)
- Nominal Voltage: 110/125V AC at 50/60Hz in 3-wire outlet
FEATURES

110/125V AC electrical tester works on standard/GFCI receptacles

GFCI Outlet Tester with lights, indicates wiring problems

Indicates open ground, reverse polarity and other conditions
![]() Klein Tools RT310 Outlet Tester, AFCI and GFCI Receptacle Tester for North Am... | ![]() Klein Tools RT110 Outlet Tester, AC Electrical Receptacle Tester for North Am... | ![]() Klein Tools ET250 Voltage Meter, AC/DC Tester, Digital Multimeter, Low Voltag... | ![]() Klein Tools ET60 Voltage Tester, Tests AC / DC and Low Voltage, No Batteries ... | ![]() Klein Tools 11045 Wire Stripper/Cutter (10-18 AWG Solid), Made in USA | ![]() Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Teste... | |
|---|---|---|---|---|---|---|
| Customer Reviews | — | — | — | — | — | — |
| Price | — no data | — | — | — | — | — |
| Mfg. No. | RT310 | RT110 | ET250 | ET60 | 11045 | RT250 |
| Description | Klein Tools RT310 Outlet Tester, AFCI and GFCI Receptacle Tester for North Am... | Klein Tools RT110 Outlet Tester, AC Electrical Receptacle Tester for North Am... | Klein Tools ET250 Voltage Meter, AC/DC Tester, Digital Multimeter, Low Voltag... | Klein Tools ET60 Voltage Tester, Tests AC / DC and Low Voltage, No Batteries ... | Klein Tools 11045 Wire Stripper/Cutter (10-18 AWG Solid), Made in USA | Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Teste... |





















