XS Volt is a powerful internal regulating system. These one wire alternators offer the highest stability available for modern electrical systems. Available in Delco CS and Denso style alternators, these units offer a number of features including: Digital Control - response time in milliseconds, compared to seconds for analog regulators. Adjustable Voltage - adjustable between 13.5 and 18.5 volts. Great for 12V or 16V systems. Powerful, Reliable Internals - short circuit protection and loss of ground protection in a sealed, vibration resistant housing. One Wire Operation - easy to connect, turns on and off with the engine. The XS Volt gives the user a great deal of control. It also provides many benefits even without adjustment. With its digital regulator, lightning quick response time, and the stability a digital system provides, many users have found their electronic components function better, even benefiting the daily driver.