Klein Tools RT210 GFCI Outlet Tester for GFCI Receptacles 110-125V AC 3-Wire Electrical Circuit Diagnostic Tool Wiring Condition Chart Drop Protection

Ensure Fast and Accurate Electrical Troubleshooting with the Klein Tools RT210 GFCI Receptacle Tester

The Klein Tools RT210 is an essential diagnostic tool for electricians, home inspectors, and maintenance professionals who need to quickly verify the safety and functionality of electrical outlets. Designed for professional-grade reliability, this tester identifies the most common wiring errors in both standard and GFCI 3-wire receptacles, including open ground, reverse polarity, and open hot conditions. Whether you are verifying a new installation or troubleshooting existing circuits, the RT210 provides immediate visual feedback to ensure every outlet is wired correctly and safely.

Efficiency is built into the design with a convenient, easy-to-read coding chart printed directly on the tool, allowing you to cross-reference light results instantly without reaching for a manual. Beyond simple detection, the RT210 features a dedicated GFCI test function to confirm the proper operation of ground fault protective devices. Built to survive the demands of the jobsite, this rugged unit is engineered with 6.6-foot (2m) drop protection, ensuring it continues to perform even after the inevitable tumbles from a tool belt or ladder. Compact and lightweight at just 1.9 ounces, it is the perfect pocket-sized companion for any electrical toolkit.

Key Features

• Comprehensive Diagnostic Capability: Detects common wiring problems including open ground, reverse polarity, open hot, open neutral, and hot/ground reversed.
• GFCI Verification: Specifically designed to work on GFCI outlets to confirm the operation of ground fault protective devices.
• Instant Reference Chart: Features a high-visibility chart on the tester body to help determine wiring conditions based on light results.
• Industrial Durability: Rugged construction built to withstand a 6.6-foot (2 meter) drop for long-term jobsite reliability.
• Broad Operating Range: Designed for nominal 110/125V AC systems at 50/60Hz in standard 3-wire outlets.
• Optimized Form Factor: Compact and lightweight design allows for easy storage and portability in a tool pouch or pocket.

What's Included

• (1) RT210 GFCI and Standard Receptacle Tester

Specifications

Pro-Tip: When testing GFCI outlets, always verify the wiring condition using the light chart before pressing the GFCI test button. If the tester indicates an "Open Ground" or "Reverse Polarity," the GFCI test may not function correctly, and you should address the wiring fault before proceeding with the safety trip test.