








⚡ Power up your safety game with Klein’s no-fail outlet tester!
The Klein Tools RT210 Outlet Tester is a professional-grade device designed to quickly detect common wiring problems in standard and GFCI outlets. Built tough to withstand drops up to 6.6 feet and operate across a broad temperature range, it ensures reliable, accurate testing of 110/125V AC circuits. Trusted by professionals for over 160 years, this compact tester offers fast diagnostics with clear visual indicators, helping you maintain electrical safety with confidence.












| ASIN | B01AKX8L0M |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #4,507 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #9 in Circuit Testers |
| Brand | KLEIN TOOLS |
| Color | Black/Orange |
| Customer Reviews | 4.8 4.8 out of 5 stars (8,847) |
| Date First Available | January 14, 2016 |
| Global Trade Identification Number | 00092644690273 |
| Included Components | GFCI Outlet Tester |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 1.9 ounces |
| Item dimensions L x W x H | 5.3 x 3.8 x 1.5 inches |
| Item model number | RT210 |
| Manufacturer | Klein Tools |
| Material | Other |
| Measurement Accuracy | See Instructions Manual for Measurement Accuracy |
| Min. Operating Voltage | 110 |
| Part Number | RT210 |
| Pattern | DEVICE |
| Power Source | Hand Powered |
| Product Dimensions | 5.3 x 3.8 x 1.5 inches |
| Size | Pack of 1 |
| Special Features | Convenient Chart on the Tester |
| Specification Met | Cat Ii 300v |
| Style | GFCI Testing |
| UPC | 092644690273 |
| Upper Temperature Rating | 140 Degrees Fahrenheit |
| Warranty Description | This product is warranted to be free from defects in materials and workmanship for a period of two years from the date of purchase. This warranty does not cover damage which occurs in shipment or failure which results from alteration, tampering, accident, misuse, abuse, neglect, or improper maintenance. |
T**W
Small and mighty
Picked this up to help diagnose two outlets that weren't working. Told me I had an issue with a negative wire, pulled the outlet out and sure enough, the wire had popped off. The tool was 100% spot on in diagnosing the issue. Its compact, cheap, and works. Can't get better than that.
K**K
Safe alternative to shock
Works as it should, would rather find bad receptacle this way opposed to shocking experience.
G**N
Great Value! Extremely Useful for DIYers!
One of the best and easiest to use electric test devices I have ever had. Better than previous version with the ground-fault circuit tester, I keep it handy for trouble shooting.
A**O
Good product!
Very easy to use. Gives you a general overview of how your outlets are wired. Does not take the place of more sophisticated (and expensive) receptacle testers or an assessment by a qualified electrician, however
Z**N
Life-Saver Around the House – Found a Dangerous Fault!
I'm no electrician, but I wanted to make sure everything was safe around my home. Got this Receptacle Tester, and boy, did it come in handy! Found a bad GFCI next to my sink that could've ended up being really dangerous. I only use this thing once a year or so to test stuff, but it's worth every penny. The chart on it was super helpful – made it easy for me to figure out what was wrong. Build quality seems solid too. I'm giving this 4+ stars. Honestly, for the peace of mind, you can't beat it.
N**E
Works Great!
It works as expected. I'd gladly buy it again if needed. Great test device.
N**.
Simple to Use - Not Too Expensive
I purchased this based on a YT review. No issues, no complaints, no second thoughts. I've never owned one of these, so I went with the slightly cheaper version. Works great. One of those tools you don't use all the time, but very nice to have when you need it.
G**E
Great little tester
Klein has a better one for a few more bucks, but IIRC that one required a battery for it's nifty display. So you could count on that battery being dead at some future point when you find yourself needing an Outlet Tester. Sometimes simpler is better. For less than $15, toss this in your kit and it will beready when you need it.
Ó**A
Muy útil
伊**伸
英語表記
A**Y
True Klein product. Works as it should. Love it for assessing electrical outlets.
L**N
Easy to use, works well, and is accurate. Handy tool to have and inexpensive enough to keep in a tool box for when / if it is required. Feels sturdy and well built, I have not had any issues with the quality of the tool.
J**N
Bien
Trustpilot
1 week ago
2 days ago