Morningstar’s SunGuard is the world’s leading single module controller. Morningstar has combined all the advantages of their SunSaver charging circuit with less expensive packaging to provide an economical controller for small PV systems.
Morningstar's SunGuard SG-4 is the most advanced small, economical solar charge controller on the market today. Providing exceptional reliability, PWM battery charging, consistent high quality & low cost. The SunGuard is able to match the quality and performance of the world-leading SunSaver controllers as they are made on the same high speed, automated production lines, use the same charging circuit, and uses the same components.