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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 confirms ground fault device operation and meets UL and CSA safety standards. Designed for durability with a 6.6-foot drop resistance and reliable operation across a broad temperature range, this compact, hand-powered tester is a must-have for electricians and savvy DIYers aiming for flawless electrical safety.












| ASIN | B01AKX8L0M |
| Best Sellers Rank | 122,345 in DIY & Tools ( See Top 100 in DIY & Tools ) 139 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 (8,613) |
| 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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