Morningstar SunGuard Charge Controller, 4.5A, 12VDCMorningstars SunGuard is the most advanced small, economical solar charge controller on the market today. SunGuards technology provides: * Exceptional Reliability * PWM Battery Charging * Consistent High Quality * Low CostThe SunGuard is able to match the quality and performance of the world-leading SunSaver controllers because of the following: * SunGuards are made on the same high speed, automated production lines * SunGuards use the same charging circuit * SunGuards use the same high quality componentsFeatures * ISO 9002 quality programs * Series design (not shunt) * 100% solid state * True 0 to 100% PWM duty cycle * Setpoint accuracy to 60 mV * Temperature compensation * Rated for 25% overloads * No need to derate * Lightning protected with 1500 W transorbs * Self-consumption is 6 mA * Fully encapsulated in epoxy potting * ABS plastic, impact-resistant case * Outdoor rated, Hypalon connecting wires