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⚡ Test Smarter, Work Safer — The Pro’s Choice for Wiring Confidence
The Klein Tools RT210 GFCI Receptacle Tester is a professional-grade device designed to quickly identify the most common wiring faults in standard and GFCI outlets. Featuring clear LED diagnostics, UL and CSA certifications, and rugged drop resistance, it ensures reliable, on-the-spot verification of electrical safety. Operating across a broad temperature range and backed by over 160 years of Klein’s trusted craftsmanship, this tester is an essential tool for electricians and serious DIYers aiming to guarantee safe, code-compliant wiring.












| ASIN | B01AKX8L0M |
| Best Sellers Rank | 331,640 in DIY & Tools ( See Top 100 in DIY & Tools ) 400 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 (8,619) |
| 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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