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The RT110 Circuit Tester from Klein Tools is a powerful yet compact electrical testing device designed for professional and DIY users alike. This tool meets all necessary UL and CSA standards and boasts an easy-to-read LED display for accurate voltage and continuity readings. The receptacle tester identifies live wires, checks circuit integrity, detects grounded circuits, and locates common electrical problems. It's perfect for use in residential, commercial, or industrial settings and ideal for testing electricians, plumbers, HVAC technicians, and general maintenance workers. With its advanced features and user-friendly design, the RT110 circuit tester saves time and money by preventing costly errors and increasing job efficiency.