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⚡ Stay wired right, every time — test like a pro with Klein Tools!
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 for quick diagnostics, it confirms GFCI functionality and meets UL and CSA safety standards. Built to endure 2-meter drops and operate reliably between 32°F and 140°F, this compact, hand-powered tester is trusted by electricians for precision and durability since 1857.












| ASIN | B01AKX8L0M |
| Best Sellers Rank | 381,002 in DIY & Tools ( See Top 100 in DIY & Tools ) 451 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 (8,623) |
| 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 | Hand Powered |
| 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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