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⚡ Stay wired right, every time — don’t get caught in the dark!
The Klein Tools RT210 GFCI Receptacle Tester is a professional-grade device engineered to detect the most common wiring issues in standard and GFCI outlets. Featuring intuitive LED diagnostics, UL and CSA certifications, and rugged drop resistance, it ensures reliable, on-site verification of electrical safety across a broad temperature range. Trusted by electricians for over 160 years, this compact tester delivers precision and durability for the modern professional.












| ASIN | B01AKX8L0M |
| Best Sellers Rank | 369,813 in DIY & Tools ( See Top 100 in DIY & Tools ) 436 in Circuit Testers |
| Brand | KLEIN TOOLS |
| Colour | Black/Orange |
| Compatible Devices | Standard and GFCI Receptacles |
| Country Of Origin | China |
| Customer Reviews | 4.8 4.8 out of 5 stars (8,601) |
| Global Trade Identification Number | 00092644690273 |
| Included Components | RT210 |
| Item Dimensions | 13.5 x 9.7 x 3.8 centimetres |
| Item Length | 1.62 Inches |
| Item Type Name | GFCI Receptacle Tester Klein Tools RT210 |
| Item Weight | 1.9 Ounces |
| Item Width | 1.88 Inches |
| Manufacturer | Klein Tools |
| Manufacturer Part Number | RT210 |
| Measurement Type | Voltmeter |
| Minimum Operating Voltage | 110 |
| Model Number | RT210 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Corded Electric |
| Product Warranty | Two years from the date of purchase. |
| Specification Met | Cat Ii 300v |
| Style Name | GFCI Testing |
| UPC | 092644690273 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 140 Degrees Fahrenheit |
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