Smart Hook powerful probe Circuit Tester - 9 Positive Negative Test

Positive/Negative Test
How to use：
Connect the Probe negative clip to the vehicle ground wire, Use the Probe Tip to find the positive / negative wire of the electric circuit system. The following interface is displayed default state:
Positive Interface：
After detected Positive signal , it will display voltage values and Positive (+) symbol.
Negative Interface：
After detected Negative signal , it will display Ground icon and Negative (+) symbol.