--- product_id: 22507602 title: "RT210 Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring Problems" brand: "klein tools" price: "€ 29.90" currency: EUR in_stock: true reviews_count: 13 category: "Klein Tools" url: https://www.desertcart.at/products/22507602-rt210-outlet-tester-receptacle-tester-for-gfci-standard-north-american store_origin: AT region: Austria --- # Detects wiring faults instantly Operates from 32°F to 140°F Built to survive 6.6ft drops RT210 Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring Problems **Brand:** klein tools **Price:** € 29.90 **Availability:** ✅ In Stock ## Summary > ⚡ Power up your safety game with Klein’s no-fail outlet tester! ## Quick Answers - **What is this?** RT210 Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring Problems by klein tools - **How much does it cost?** € 29.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/22507602-rt210-outlet-tester-receptacle-tester-for-gfci-standard-north-american) ## Best For - klein tools enthusiasts ## Why This Product - Trusted klein tools brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rugged Durability:** Engineered to endure tough jobsite conditions with drop resistance up to 6.6 feet—built for the long haul. - • **Compact & User-Friendly:** Lightweight, pocket-sized design with an easy-to-read chart makes professional-grade testing accessible anytime. - • **GFCI Safety Verification:** Test and confirm your GFCI outlets trip properly, ensuring ultimate protection against electrical faults. - • **Instant Wiring Diagnostics:** Plug in and get immediate, clear LED indicators for open ground, reverse polarity, and more—no guesswork. - • **Versatile Temperature Range:** Reliable performance from freezing cold to scorching heat (32°F to 140°F), perfect for any environment. ## Overview The Klein Tools RT210 Outlet Tester is a professional-grade device designed to quickly detect common wiring issues and verify GFCI outlet functionality. Built tough to withstand drops and extreme temperatures, it offers reliable, instant diagnostics for 110/125V AC outlets, making it an essential tool for electricians, DIYers, and safety-conscious homeowners alike. ## Description 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. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. 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. Review: Simple and reliable - This Klein outlet tester is a very handy tool to have around the house. It’s extremely simple to use—just plug it into an outlet and the indicator lights quickly show whether the wiring is correct or if there’s a problem like an open ground or reversed wiring. The built-in GFCI test button is also very useful. It allows you to quickly verify that GFCI outlets are functioning properly and trip when they should. I used it to check several outlets around the house and it worked exactly as expected. The build quality feels solid, which is typical for Klein tools, and the printed legend on the front makes it easy to interpret the light patterns. Overall this is an inexpensive but very useful tool for homeowners, DIYers, or anyone who wants to quickly verify outlet wiring and GFCI protection. Review: 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. ## Features - EFFECTIVE GFCI WIRING PROBLEM DETECTION: GFCI Tester detects common wiring problems in standard and GFCI receptacles, ensuring electrical safety - COMPATIBLE WITH GFCI OUTLETS: Works on GFCI outlets and verifies the proper operation of the ground fault protective device, providing peace of mind - DURABLE AND TOUGH: Built to withstand a 6.6-foot (2m) drop, ensuring durability and reliability in various working conditions - WIDE OPERATING TEMPERATURE RANGE: Can be used in temperatures ranging from 32-Degree to 140-Degree Fahrenheit (0-Degree to 40-Degree Celsius), offering versatility - VERSATILE VOLTAGE SUPPORT: Designed for use with 110/125V AC at 50/60Hz in 3-wire outlets, meeting common voltage requirements - QUICK AND ACCURATE TESTING: The GFCI Tester provides a fast and reliable solution for detecting wiring issues and confirming the functionality of GFCI outlets - ENSURE ELECTRICAL SAFETY: By utilizing the GFCI Tester, users can verify proper wiring and operation, promoting electrical safety in homes and workplaces ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01AKX8L0M | | Best Sellers Rank | #5,267 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Circuit Testers | | Brand Name | KLEIN TOOLS | | Color | Black/Orange | | Customer Reviews | 4.8 4.8 out of 5 stars (8,858) | | Global Trade Identification Number | 00092644690273 | | Included Components | GFCI Outlet Tester | | Item Dimensions | 5.3 x 3.8 x 1.5 inches | | Item Type Name | Klein Tools RT210 GFCI Receptacle Tester | | Item Weight | 1.9 Ounces | | Manufacturer | Klein Tools | | Minimum Operating Voltage | 110 | | Model | RT210 | | Power Source | Hand Powered | | Specification Met | Cat Ii 300v | | Style Name | GFCI Testing | | UPC | 092644690273 | | Unit Count | 1.0 Count | | 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. | ## Product Details - **Brand:** KLEIN TOOLS - **Color:** Black/Orange - **Item Weight:** 1.9 Ounces - **Power Source:** Hand Powered - **Style:** GFCI Testing ## Images ![RT210 Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring Problems - Image 1](https://m.media-amazon.com/images/I/5143f577xkL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Simple and reliable *by C***N on March 16, 2026* This Klein outlet tester is a very handy tool to have around the house. It’s extremely simple to use—just plug it into an outlet and the indicator lights quickly show whether the wiring is correct or if there’s a problem like an open ground or reversed wiring. The built-in GFCI test button is also very useful. It allows you to quickly verify that GFCI outlets are functioning properly and trip when they should. I used it to check several outlets around the house and it worked exactly as expected. The build quality feels solid, which is typical for Klein tools, and the printed legend on the front makes it easy to interpret the light patterns. Overall this is an inexpensive but very useful tool for homeowners, DIYers, or anyone who wants to quickly verify outlet wiring and GFCI protection. ### ⭐⭐⭐⭐⭐ Small and mighty *by T***W on January 5, 2026* 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. ### ⭐⭐⭐⭐⭐ Safe alternative to shock *by K***K on March 7, 2026* Works as it should, would rather find bad receptacle this way opposed to shocking experience. ## Frequently Bought Together - Klein Tools RT210 Outlet Tester, Receptacle Tester for GFCI / Standard North American AC Electrical Outlets, Detects Common Wiring Problems - Fluke 1AC II VoltAlert Non-Contact Voltage Tester, Pocket-Sized, 90-1000V AC, Audible Beeper, 2 Year Warranty, CAT IV Rating, Packaging May Vary - Klein Tools RT250 GFCI Outlet Tester with LCD Display, Electric Voltage Tester for Standard 3-Wire 120V Electrical Receptacles --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/22507602-rt210-outlet-tester-receptacle-tester-for-gfci-standard-north-american](https://www.desertcart.at/products/22507602-rt210-outlet-tester-receptacle-tester-for-gfci-standard-north-american) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-04-22*