Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this electrical outlet tester for its accuracy and ease of use, with most highlighting its ability to instantly diagnose wiring faults like open grounds, reversed polarity, and open neutrals. The clear LCD display and color-coded indicators make results easy to interpret, while the GFCI trip time measurement feature is frequently cited as valuable. Reviewers emphasize the intuitive, plug-and-play design requires no electrical expertise, making it ideal for homeowners and professionals alike. Most describe it as reliable and durable, with electricians noting professional-grade performance. A few mention limitations with 240V circuits or occasional issues with abnormal voltage readings, though most consider it an essential diagnostic tool.
Customer review summary generated by AI, including incentivized reviews.Klein Tools Digital Receptacle Tester
Would RecommendExcellent digital outlet tester. Quality unit at a great price.
Verified Purchaser
Reliable
Would RecommendWorked as described
Verified Purchaser
Rt250
Nice tester, I like the voltage display and the GFCI trip time. But code requires receptacles to be installed ground pin up which means I can't see the display on the tester wo using a short extension cord. Should have had the ground pin on top of the tester
From Klein Tools
Electric
Great product
Verified Purchaser
It’s a great product
Would RecommendVerified Purchaser
Used Product
I received a USED product that had been opened and the batteries were missing. I didn't discover this until pulling the product from the bag a week later after my curbside pickup. Do better, Lowes!
Verified Purchaser
Every home should have one
Would RecommendBest tool in my box ! Better then simple tester works great and is very easy to use as well as very accurate!
Verified Purchaser
Has a minor flaw
Would RecommendIt is a nice general purpose tester. But I discovered a problem. It does not identify a NEMA 5 outlet that was wired to 240 volts (circuit was incorrectly labeled). All the RT250 said was 30v ground/hot reversed. It had a stern warning that it was limited to 120v. The RT250 needs to be redesigned to handle this situation and report the fault..
From Klein Tools
Didn't need it but need it
Didn't really need this device as I would just use a multimeter to very the outlet is correctly wired; however, with newer outlets with built-in safety covers it's near impossible to get the probes into the outlet. It also prevents the use of alert voltage tester to see if the outlet is live. This unit tests the outlet wiring and verifies that the outlet is live along with testing GFCI circuits. A must have device when needing to verify an outlet is live or correctly wired that has built-in sa...
From Klein Tools
Was able to quickly diagnose open ground problem
Would Not RecommendPro: Electrician I hired used this tester to quickly diagnose my open ground problem. Con: Specs say 135volts. Not sure what that means. Many yrs ago I had a plug in receptacle tester blow up in my hand due to the receptacle (ckt) being wired wrong. Had 220volts on it. Needs to be rated for 600 volts because its possible that someone could accidently or on purpose wire a receptacle up that way in a commercial or industrial environment. I personnally would not use one of these unless it c...
From Klein Tools
Wish it had higher range
Would Not RecommendI wish it was rated for up to 230v. In an entertainment 3 phase system, it's possible to accidentally have an outlet connected to two hot legs instead of a hot and neutral. This tester is only rated for up to 135v. I'm afraid if I come across this situation it will fry the tester. Because of that, it's not that much more useful to me than the old-stye, 3 bulb tester, and it's twice the size.
From Klein Tools
This is a game changer
Would RecommendI bought this a month ago. I use this on my side job work and I also use it at work. I just like how it helps make troubleshoot stuff.
From Klein Tools
GFCI Tester with LCD screen
Would Not RecommendGives false readings when voltages are abnormal or when the neutral has back feed, very misleading, waste of money, I would return item but it's a hassle, just sits in my toolbox now
From Klein Tools
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