- Ergonomic design with a comfortable, non-slip grip provides a stable hold and reduces labor during AC/DC circuit detection. The tester uses a sensitive electronic pen sensor for precise measurement. - Enhanced visibility with built-in LED lighting ensures clear readings in dim conditions, enabling smooth work in tight or poorly lit environments. - Compact and portable with a pen clip for easy carrying, keeping the tester readily available and reducing burden during voltage testing tasks. - Intelligent sensing pen offers multifunctional sensing measurement, helps you locate breakpoints, automatically distinguishes between zero and live wires, and sensitively indicates wire status for safe, reliable operation. - Use scenario 1: diagnose and troubleshoot AC or DC circuits in home or workshop electrical panels, outlets, and wiring installations. - Use scenario 2: perform wiring installations or upgrades in dim workspaces such as basements, garages, or equipment rooms, where clear visibility and safe operation matter. - Use scenario 3: field service tasks and quick fault finding on electrical devices or industrial equipment, where automatic live/neutral differentiation and precise sensing improve safety and efficiency.