12V tester pen with indicator light and digital display for safe and accurate testing during car maintenance. The builtin indicator light helps detect issues clearly, while the digital display provides easytoread results in a compact, handheld form. Circuit tester with copper probes that easily pierce wire insulation to check circuits. Designed for quick verification of circuits and wiring in automotive applications, making it suitable for car electrical work and harness checks. Test light with voltage display, widely used to test voltage polarity, continuity, and to check lamps and electric motors. It helps follow and locate short circuits in 12V electrical systems, providing reliable readings for troubleshooting. Continuity tester with light featuring an extendable spring cable. The extendable cable allows flexible access to any electrical system, enabling convenient and thorough continuity checks. Key benefits Safe, visible testing: indicator light and voltage display provide clear feedback during use. Versatile 12V compatibility: designed for automotive electrical testing and general 12V systems. Efficient inspection: copper probes quickly check circuits and wiring insulation. Flexible reach: extendable spring cable in the continuity tester enables easy access to hardtoreach areas. Compact, handheld design: portable tools that are simple to use for quick diagnostics. Practical use scenarios Automotive electrical diagnostics: test battery circuits, fuses, wiring harnesses, and locate shorts in the vehicle's 12V system. Wiring installation and : verify circuit continuity and correct wiring connections during aftermarket installations. Equipment maintenance and troubleshooting: check polarity, test motors and lamps, and identify open or shorted circuits in 12V powered devices.