Voltage: 12V and 24V Current: 20A-150A Operating temperature: from – 40℃ to 120℃ The regulator adopts advanced integrated chip, with over current, overheating protection function, and with constant frequency regulation function, making the alternator works more stable. 600 models of alternator types: Bosch, Mitsubishi, Valeo, Petra, Isuzu, Lucas, etc.