Feature: 1. Professional Functions: With a variety of functions, such as, testing for continuity, diagnosing circuit failures, checking the good and bad ground, activating components on and off the vehicle, capturing minimum maximum voltage, etc. 2. 4 Adjustable Mode Circuit Tester: Four modes are available for diagnosing electrical systems, just press the mode button and cycle between each mode, DC voltage, AC voltage, resistance and diode. 3. Safety Design: Automatic circuit breakers protect the tool from overloads with internal circuit breakers. In addition, the rugged blow molded case can protect these parts to avoid damage and facilitate transportation. 4. Easy to Use: Built in LED flashlight allows you to work in dark areas, beep when testing, and operate the tool without checking the menu once you are familiar with the tone. 5. Wide Applications: The power circuit tester probe kit can support 6‑30V vehicles, such as cars, boats, trailers, ATVs, RVs and many others. 33ft cable allows easy access to test along the vehicle. Specification: Item Type: Power Circuit Tester Probe Kit Material: ABS + Copper Display: TFT Color Display (160 x 128 Dpi) Operating Temperature: 0 To 60℃ (32 To 140 ℉) Storage Temperature: -40 To 70℃ (-40 To 185 ℉) External Power Supply; 12.0 or 24.0 V From Vehicle Battery Function: 1. Determine at a glance if a circuit is positive, negative, or open without having to reconnect clips from one battery pole to another. 2. Test for continuity with its built in auxiliary ground lead. 3. By depressing the power switch, conduct a positive or negative battery current to the probe tip for testing the function of an electrical component without the use of jumper wires. 4. Test for poor ground contacts instantly without performing voltage drop tests. The tool is also short circuit protected; its internal circuit breaker will trip if it becomes overloaded. 5. Follow and locate short circuits without wasting fuses. The tool's long cable allows you to test along the entire length of the vehicle without constantly searching for suitable vehicle grounds. Characteristic: 1: Multi language support: English, German, French, Russian, Spanish, Italian, Portuguese 2: Integrated LED flashlight on the head, allowing us to work easily in dark conditions. 3: All clamps and cables are made of copper to improve the stability during operation Usage Scenarios: For diagnosing all 6V to 30V automotive electrical systems. Package List: 1 x Electrical Tester1 x Cable1 x Clip Cable1 x Testing Tool1 x Testing Tool Lid1 x Manual1 x Box