Features and Benefits * Dual probes * Computer safe * Has a polarity indicator The first probe flips out enabling you to check hard-to reach connections and can be flipped back when not in use. The second probe with centering V design allows you to penetrate the center of the wire every time. Fits 16 gauge and smaller wire. Safe for use on 12 volt automotive computer circuits. Tool draws less than 19 mA. at 12 volts DC with an operating range of 6-28 volts.