Check the listing for details. 6-30V Power Circuit Probe Tester Voltage Resistance Diode Electrical System Test. Condition: New. Listed at 39.76 USD. AUTOOL BT250 Car Electric Circuit Tester is suitable for diagnostic in all 6V to 30V vehicle electrical systems. With a simple hook-up of the tool to the vehicle's battery, AC voltage detection, DC voltage detection, Resistance Detection, Diode Test, and Current overload protection will be available to test. Features:➤ 1.【Easy-to-use and Multifunctional Circuit Tester】The main functions of this electrical tester: voltage and polarity testing, continuity testing, signal circuit testing, activating components in your hand, activating components in the vehicle, activating components w/ground, checking for poor ground contacts, following and locating short circuits. This power circuit probe tester is ideal for diagnosing all 6V to 30V vehicle electrical systems.➤ 2.【Electrical Tester with 4 Working Modes】DC Voltage: The power circuit probe tester will read DC voltage with 0.1 volt resolution. AC Voltage: The LCD display of the circuit tester will read the maximum and minimum voltage, frequency and duty cycle. Resistance: The tester will read the resistance between the tip and the auxiliary ground lead. Diode Mode: quickly test the operation of the diode assembly and determine if it is conducting.➤ 3.【Self-test & Circuit Breaker Protection & 7 Languages】Before using the automotive circuit tester, the quick self-check function of the tester can ensure that the tester is in good condition. The tool is short circuit protected and its internal circuit breaker will trip if overloaded. The circuit breaker is a valuable test tool as well as a safety measure to protect the tool from Overload. The automotive tool supports 7 languages: English, German, Spanish, French, Italian, Russian, Portuguese.➤ 4.【1.5m Test Lead & TFT Color Display & LED Light】The power circuit probe tester features a high-definition TFT color display with high resolution, allowing you to view data clearly and comfortably. The circuit breaker finder has two LED lights to work easily even in dark or low light conditions. Conduct positive or negative battery current to the probe tip by pressing the power switch of the tester to test the functionality of electrical components without the use of jumper wires.➤ 5.【Portable and Quick Test Circuit Tester】With this car circuit tester tool, you can determine at a glance whether a circuit is positive, negative, or open without having to reconnect the clips from one battery pole to another; Test for continuity with its built-in auxiliary ground lead; Test for poor ground contacts instantly without performing voltage drop tests; Follow and locate short circuits without wasting fuses.➤ 6.【POWER SUPPLY】The automotive power circuit probe tester is powered via the vehicle battery. Connect the RED battery clamp to the POSITIVE terminal of the vehicle’s battery, and the BLACK clamp to the NEGATIVE terminal. When the power circuit probe tester is first connected to a battery (power source), the car electrical tester will sound a beep and the headlights will be on to illuminate the test area of the probe tip.➤ 7.【3-Year Warranty】We offer a free 36-month warranty on this circuit tester kit to ensure your shopping experience. If you have any questions about this tester tool, please feel free to contact us. • 1.5M Power Cable——Can cover the entire engine compartment, enabling easy inspection of the car's electrical system.• Bright LED lights——Work easily even in dark or low light conditions.• TFT Color Display——Allows you to view data clearly and comfortably. • Portable and quick testWorks on all 6-30V vehicle electrical systems. • Checking for Poor Ground ContactsProbe the suspected ground wire or contact with the probe tip. If the circuit breaker tripped, this circuit is more than likely a good ground. • Activating ComponentsActivating components in your hand, activating components in the vehicle, activating components w/ground. • Checking for Poor Ground ContactsProbe the suspected ground wire or contact with the probe tip. If the circuit breaker tripped, this circuit is more than likely a good ground. • Following and Locating Short CircuitsRemove the blown fuse from the fuse box. Use the probe tip to activate and energize each of the fuse contacts. The contact which trips the circuit breaker is the shorted circuit. DC Voltage Used to detect thevoltage value of the circuit under test AC Voltage Used to detect the maximum minimum yoltagevalue, power frequency and duty cycle of thecircuit. Resistance ModeIn this mode, the L CD display will read theresistance between the tip and auxiliary groundlead. Diode ModeQuickly test the working condition of diodecomponents and determine open circuits andcontinuity. Current Overload Protection MehrsprachigUnterstÜtzt 7 Sprachen: Englisch, Russisch, Deutsch, Portugiesisch, Französisch, Italienisch, Spanisch Specification Display: TFT color display (160 x 128 dpi) Operating Temperature: 0 to 60°C (32 to 140 F°) Storage Temperature: -40 to 70°C (-40 to 185 F°) External Power: 12or 24V power provided via vehicle battery Dimensions: 126 mm (4.96”)x46.5 mm (1.83”)x35 mm (1.38”) L*W*H NW: 0.105kg (0.23lb) Package Included1x AUTOOL BT250 Car Electric Circuit Tester main unit;1x User’s Manual.;1x Battery clamps;1x Probe tip;1x 1.5m extension cable.