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This Receptacle Tester GFCI from Klein Tools is an essential tool for electricians and homeowners alike, providing accurate and reliable testing of ground fault circuit interrupters (GFCI) in various receptacles. The RT210 easily detects improper wiring and potential hazards, helping prevent electrical shocks and fires. With its easy-to-read display, this GFCI tester offers hassle-free operation and instant results. Ideal for use in homes, offices, and other residential settings, the Klein Tools Receptacle Tester ensures your electrical outlets meet safety standards and are safe to use. Invest in peace of mind today with the RT210 GFCI receptacle tester from Klein Tools!