AUTOOL Power Circuit Probe Tester Automotive Circuit Tester Car Fuse Relay Short Tester Breaker Finder 6-30V AC DC Voltage Resistance Diode Electrical System Test Diagnostic Tool for 12V 24V Vehicle

With the BT250 power circuit probe tester, you can test for voltage and polarity/continuity/signal circuits/bad ground contacts/short and open circuits.

And most importantly, you can also use it to check the on/off of switches, relays and diodes, fuses and circuits, activating electronic components in your hands/in your vehicle/with a ground.

It is the best electrical tester to reduce the diagnostic time of all 6-30 volt vehicle electrical systems.

4 Adjustable Modes Circuit Tester AC detects the maximum and minimum voltage, supply frequency and duty cycle of the circuit under test; DC detects the voltage value of the circuit under test.

In addition,the circuit tester can also detects the resistance between the circuit probe under test and the auxiliary ground; Diode Test can quickly test the operation of the diode assembly and determines if it is conducting.

The last mode is the audio tone mode.