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⚡ Test Smarter, Work Safer — The Pro’s Choice for Electrical Confidence
The Klein Tools RT250 GFCI Outlet Tester is a professional-grade electrical testing device designed for North American 3-wire 120V outlets. Featuring a large backlit LCD, it provides precise voltage readings, identifies common wiring faults including open neutral and ground, and displays GFCI trip times. With bright LED indicators, an auto-hold function, and a CAT II 135V safety rating, it delivers fast, reliable diagnostics trusted by electricians and DIYers alike.
| ASIN | B08QW7K1JJ |
| Best Sellers Rank | 483,606 in DIY & Tools ( See Top 100 in DIY & Tools ) 556 in Circuit Testers |
| Brand | KLEIN TOOLS |
| Colour | Multi |
| Customer Reviews | 4.8 out of 5 stars 10,915 Reviews |
| Global Trade Identification Number | 00092644693212 |
| Included Components | 2 x 1.5V AAA Alkaline Batteries and Manual |
| Item Dimensions | 11.5 x 2.9 x 5.1 centimetres |
| Item Length | 4.5 Inches |
| Item Type Name | Klein Tools RT250 GFCI Receptacle Tester with LCD Display, for Standard 3-Wire 120V Electrical Outlets |
| Item Weight | 0.26 Pounds |
| Item Width | 2 Inches |
| Item dimensions L x W x H | 11.5 x 2.9 x 5.1 centimetres |
| Item weight | 0.26 Pounds |
| Manufacturer | Klein Tools |
| Manufacturer Part Number | RT250 |
| Maximum Operating Voltage | 120 Volts |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 120 Volts (AC) |
| Model Number | RT250 |
| Power Source | Corded Electric |
| Power source | Corded Electric |
| Specification Met | CSA |
| Style | Receptacle Tester |
| Style Name | Receptacle Tester |
| UPC | 092644693212 |
| Unit Count | 1 1 |
| Upper Temperature Rating | 60 Degrees Celsius |
A**G
Calidad
Calidad y exactitud
D**N
Simple and easy to use yet Amazing precision!!!
I picked up the Klein Tools RT250 GFCI Outlet Tester to help check a few outlets around my house, and I’m honestly impressed. This thing is super straightforward, just plug it in, the lights pop on, and you instantly know what’s going on with the wiring. No guesswork, no complicated setup, just clear results. The display is bright and easy to read, and the built-in GFCI test button is a lifesaver when checking bathroom and kitchen outlets. It helped me identify a miswired outlet in an older part of my house that I never would’ve caught otherwise. For something at this price, it feels durable and professional like something an electrician would actually use. If you’re a homeowner, DIYer, or just want peace of mind about the electrical safety in your place, this is a solid buy. Fast, accurate, and super easy to use. Highly recommend!
M**A
Definitely recommend this tool.
Does exactly what the advertising says. Seems really well made from solid material.
F**S
Handy Tool
This tester could save your life. Used in an RV with no issues - the tester showed all was well. Using the same tester in a house, it gave an indication of potential wiring issue, as the voltage showed 30VAC on first check and 123V on a subsequent check. It will also indicate ground issue, reverse polarity. Glad to have bought.
L**M
Easy to read and use for proper outlet installation
An excellent product that takes the guess work out of electrical outlet installation. The display is easy to read and lets you know definitively if you are wired correctly or not. The red and green lights are nice as well as the LED voltage readout. Very accurate and a good value. Also great for checking GFI circuits.
Trustpilot
1 month ago
2 weeks ago