Our automotive circuit tester provides lab grade current measurement (0.01A-20A) in 1-48V systems, to quickly diagnose shorts, opens, and hidden electrical faults. Simply remove fuses and insert the tester into fuses sockets for readings. Anti slip ABS/ handle with rubber coating ensures secure grip and reduces hand fatigue during prolonged testing. Features a bright blue backlit LCD screen for easy readability in sunlight, dim garages, or nighttime conditions. Built in front LED light illuminates tight engine spaces, eliminating the need for extra flashlights. Withstand oil, drops, and tough workshop uses. Compact and lightweight for easy storage in toolboxes or portability between vehicles. Powered by a high capacity 23A battery (not included), enabling hundreds of tests. Ideal for troubleshooting household car issues (dead lights, power window failures) and commercial vehicle circuit evaluations.