MRCARTOOL B550 is the best electrical tester for reducing diagnostic time in all 6to 30 volt vehicle electrical systems. After a simple hook-up of the tool tothe vehicle’s battery, you can :Determine at a glance if a circuit ispositive,negative, or open withouthaving to reconnect clips from onebattery pole to another. Then AC voltage detection, DC voltage detection, Resistance Detection, Diode Test, and Current overload protection will be available to test.

MRCARTOOL B550 Car Electric 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 10m ]: 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, MRCARTOOL 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.[2-YEAR WARRANTY]： For damages caused by non-human factors, MRCARTOOL promise to resend parts for free within 2 years. For any needs, you are warmly welcomed to contact us and we will get back to you ASAP within 24 hours.