Multifunction Pen: Features alternating current/direct current voltages detection, live/neutral wire identification, circuit continuity testing, and leakage screening,replacing multiple single function testers Professional Detection: The car tester quickly identifies blown, loose, or overloaded fuses without removal, significantly improving automotive circuit repair efficiency Accurate Digital Readouts: The tool feature clear LCD displays showing precise measurements for voltages, current, and testing results, eliminating guesswork from traditional testers This automotive circuit fault probe tester combines a car current tester with digital voltages pen function, providing essential tool for automotive circuit diagnostics and home/industrial electrical testing in 1convenient package Compact & Portable Design: Lightweight size fit easily in car toolboxes, home set, or repair bags for automotive, household, construction, and outdoor electrical troubleshooting, Manufacturer: Arecobticy