BT250 Car Circuit Tester Power Probe 6-30V AC DC Voltage Resistance Diode Polarity Test Continuity Test Powerscan ToolBT250 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.BT250 Car Electric Circuit Tester Features :1. [AC & DC Voltage Detection Mode]: AC detects the maximum and minimum voltage, supply frequency and duty cycle of the circuit under test. While DC volt. detection detects the voltage value of the circuit under test. 2.. [Resistance Test & Diode Test Mode]: It detects the resistance between the circuit probe under test and the auxiliary ground; While Diode Test can quickly test the operation of the diode assembly and determines if it is conducting. 3. [Ultra Extension Inspection Cable 1.5m ]: Covering from the front to the rear of the vehicle, you can easily inspect the entire electrical circuit system. 4. [Current Overload Protection]: When the current overload, BT250 Automotive Circuit Tester will automatically disconnect the protection circuit to reduce unnecessary losses. 5. [Multi-language options]: Choose from 7 languages: English, German, Spanish, French, Italian, Russian, Portuguese 6. [Following & Locating Short Circuits]: Probe through the insulation with the probe tip, Cut the wire and energize each end with the probe tip. it will lead you to the shorted area. 7. [3-YEAR WARRANTY]:For damages caused by non-human factors, promise to resend parts for free for free if they are in warranty. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours. Parameter Details of BT250 Automotive Circuit Tester:1)Display: TFT color display (160 x 128 dpi) 2) Operating Temperature: 0 to 60C (32 to 140 F) 3) Storage Temperature: -40 to 70C (-40 to 185 F) 4) External Power: 12.0 or 24.0 V power provided via vehicle battery Packing list:1x Unit 1x User s Manual. 1x Battery clamps adaptor. 1x Battery clamps 1x Probe tip 1x 1.5m. extension cable.