Morningstar has just upgraded their very popular ProStar line of pulse width modulated (PWM) charge controllers to include several new features. This model is available in 48 volts, 15 amps, with an LCD display. The ProStar's display shows battery voltage, array amperage and load amperage (if applicable), but now it also shows system information when a self diagnostics test is performed as well as error codes to let you know what is going on if it detects a fault. Internal temperature compensation is still standard. Five year warranty