Identifies the polarity of the circuit being tested on the LCD, red for positive and green for negative. Wire hook probe design, makes piercing wire insulation easier, the hook can be locked out of the way when probing terminals. LCD meter draws minute currents making this tool safe around delicate electronic components. With a range of 3-60V DC, this tool is suitable for motorcycle, car, mild hybrid and commercial vehicles. Supplied with 3m coiled cable and insulated crocodile earth clamp. Do not use on airbags. Battery 1 x CR2032 (supplied). Features & Benefits:Identifies the polarity of the circuit being tested on the LCD, red for positive and green for negative.Wire hook probe design, makes piercing wire insulation easier, the hook can be locked out of the way when probing terminals.LCD meter draws minute currents making this tool safe around delicate electronic components. With a range of 3-60V DC, this tool is suitable for motorcycle, car, mild hybrid and commercial