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⚡ Stay wired right, every time — don’t get left in the dark!
The KLEIN TOOLS RT210 GFCI Receptacle Tester is a professional-grade device engineered to detect common wiring issues in standard and GFCI outlets. Featuring LED indicators and a handy diagnostic chart, it ensures quick, accurate fault identification including open ground, reverse polarity, and more. Certified to UL and CSA standards, it withstands 2-meter drops and operates reliably across a broad temperature range, making it an essential tool for electricians and serious DIYers committed to safety and precision.












| ASIN | B01AKX8L0M |
| ASIN | B01AKX8L0M |
| Best Sellers Rank | #82,815 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #126 in Circuit Testers |
| Brand Name | KLEIN TOOLS |
| Color | Black/Orange |
| Compatible Devices | Standard and GFCI Receptacles |
| Customer Reviews | 4.8 4.8 out of 5 stars (8,940) |
| Customer reviews | 4.8 4.8 out of 5 stars (8,940) |
| Date First Available | 21 January 2016 |
| Department | Unisex-Adult |
| Global Trade Identification Number | 00092644690273 |
| Included Components | RT210 |
| Is Discontinued By Manufacturer | No |
| Item Dimensions | 13.5 x 9.7 x 3.8 centimeters |
| Item Type Name | GFCI Receptacle Tester Klein Tools RT210 |
| Item Weight | 1.9 Ounces |
| Item model number | RT210 |
| Manufacturer | Klein Tools |
| Manufacturer | Klein Tools |
| Measurement Type | LCR Meter, Ohmmeter, Voltmeter, Multimeter, or Ammeter |
| Minimum Operating Voltage | 50 Volts |
| Model | RT210 |
| Part Number | RT210 |
| Power Source | Corded Electric |
| Product Dimensions | 13.46 x 9.65 x 3.81 cm; 53.86 g |
| Specification Met | UL STD 1436, CSA STD C22.2 #160 |
| Style Name | GFCI Testing |
| UPC | 092644690273 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 140 Degrees Fahrenheit |
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