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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 the most common wiring issues in standard and GFCI outlets. Featuring LED indicators for quick diagnostics, it verifies ground fault protection and meets UL and CSA safety standards. Built tough to withstand 6.6-foot drops and operate reliably between 32°F and 140°F, this compact tester is a must-have for electricians and savvy professionals ensuring safe, code-compliant wiring.












| ASIN | B01AKX8L0M |
| Best Sellers Rank | 384,542 in DIY & Tools ( See Top 100 in DIY & Tools ) 442 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 (8,602) |
| 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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