AUTOOL BT250 Electrical Circuit Tester For Trucks

The AUTOOL BT260 Electrical System Tester uses electromagnetic induction to detect voltage signals. When the device's metal probe comes into contact with a circuit, its built-in high-sensitivity sensing element can detect the alternating magnetic field around the circuit. If current is flowing through the circuit, the LED indicator on the device will light up instantly, providing you with a clear and accurate indication of the electrode polarity.