Check the listing for details. Car Truck Circuit Tester Electrical System Voltage Tester AVOmeter Multimeter. Condition: New. Listed at 69.99 USD. MR CARTOOL circuit probe is an Electrical Tester for reducing diagnostic time in all 6-30V automotive electrical systems, can test for continuity, test for polarity, test for bad ground contacts, check switches, relays and the on-off of diodes, fuses and circuits, track and locate short circuits. Features:➤1.MAIN FUNCTIONS: Testing for voltage, polarity, continuity, signal circuit, trailer lights & connections, following & locating short circuits, checking for bad ground contacts, activating components, etc. It can work on all 6-30V vehicle electrical systems.➤2.4 WORKING MODES: Circuit probe tester B530 has 4 modes for diagnosing electrical systems: DC voltage, AC voltage, resistance and diode parameters. The newly upgraded navigation menu allows very clear reading and can be easily used even without manuals.➤3.3FT CABLE: The cable length up to 10m allows you to test along the entire length of the vehicle without constantly searching for suitable vehicle grounds. Comes with a carry case with handle to store the tool whenever.➤4.2 TYPES POWER SUPPLY: The circuit tester is powered via the vehicle battery or cigarette lighter, No Need for additional batteries or wiring. When the tool is first connected to a battery, it will sound a beep and the head lights will be on to illuminate the test area of the probe tip.➤5.SAFETY PROTECTION: The tool is short-circuit protected, its internal circuit breaker will trip if it becomes overloaded. The quick self-test is a must before starting to test a circuit or component, to ensure that your tool is in good. MR CARTOOL offers 24-month free warranty. No need to pay extra for warranty service, saving you a lot of money! Test Applications1.Voltage Testing2.Polarity Testing3.Continuity Testing4.Signal Circuit Testing5.Activating Components in the Hand6.Activating Components in the Vehicle7.Testing Trailer Lights and Connections8.Activating Components W/Ground9.Checking for Bad Ground Contacts10.Following & Locating Short Circuits 4 Test Modes:1.DC Voltage Test2.AC Voltage Test3.Resistance Test4.Diode Test 2 Tyeps of Power Supply1.cigarette lighter2.car battery Flashlight DesignTo enable users to successfully complete the circuit testing in a dark enviroment. 10meter extension cableCovering from the front to the rear of the car,you can easily to inspect the entire electrical circuit system Storage bag Easy to carry Specification:1.DC voltage range : 0-65V +1 digit2.Resistance range : 0 – 200 KΩ3.Frequency response of tone pass through 0Hz to 10Khz.4.Circuit Breaker:Rating curren:1 –10 Amp5.Testing Standard100% current : no trip150% current: trip in one hour200% current: trip in 3-30 seconds.300% current: trip in 0.5-4.0 seconds Package Included:1x Unit1x User’s Manual.1x Cigarette lighter adapter.1x Battery hookup clips1x Probe tip1x 20ft. extension cable Model B550 B530 voltage resistance test ✓ ✓ Intelligent multimeter ✓ diode test ✓ Oscilloscope test ✓ (0-5V) adjustable power supply ✓ Voltage / resistance intelligent identification ✓ AC circuit signal test ✓ ✓ Test trailer lights ✓ ✓ Check the poor grounding and find the short circuit ✓ ✓ Vehicle component activation ✓ ✓ Multi-languages ✓ ✓