Klein Tools RT210 Gfci Receptacle Tester 110 125V Ac

Product Description

The KLEIN TOOLS RT210 is a GFCI receptacle tester designed to detect the most common wiring faults in standard and ground fault circuit interrupter outlets. It confirms that the GFCI protective device trips correctly and that the outlet is wired safely. Compatible with 3-wire receptacles running at 110 to 125 volts AC at 50 or 60 Hz, the RT210 gives electricians and inspectors a fast, tool-free method to verify outlet condition. The unit is built to withstand a 6.6-foot drop, making it durable enough for daily field use on residential and light commercial job sites.

The RT210 is used by licensed electricians, electrical inspectors, and service technicians to verify receptacle wiring in residential and commercial installations. It is suited for pre-inspection walkthroughs, new construction rough-in verification, and service calls where a tripped or malfunctioning GFCI outlet is reported. The tester plugs directly into any standard 3-wire outlet and delivers an instant indication of wiring status without requiring additional test leads or meters.

Key Features

• Detects the most common wiring problems in standard and GFCI receptacles
• Confirms correct operation of the ground fault protective device
• Works on 110 to 125 volts AC at 50 or 60 Hz in 3-wire outlets
• Drop-rated to withstand a 6.6-foot fall for field durability
• Operating temperature range of 32 to 140 degrees F for year-round use
• No test leads required — plugs directly into the outlet

Compatibility

Designed for use with standard 3-wire GFCI and non-GFCI receptacles operating at 110 to 125 volts AC at 50 or 60 Hz.

Installation Notes

This tester is used by licensed electricians and electrical inspectors and requires no installation. Before testing a GFCI outlet on a circuit with sensitive equipment, confirm that the test function will momentarily interrupt power downstream. Follow all applicable NEC guidelines when evaluating receptacle wiring. The tester does not replace a full circuit diagnostic and should be used as part of a complete inspection workflow.

Technical Specifications

• Nominal Voltage: 110 to 125 volts AC
• Frequency: 50 or 60 Hz
• Outlet Compatibility: 3-wire standard and GFCI receptacles
• Operating Temperature: 32 to 140 degrees F
• Drop Rating: 6.6 feet
• Weight: 3.3 pounds

Standard Information

• Brand: KLEIN TOOLS
• Manufacturer Part Number: RT210