Tracer AN series controller, based on multiphase synchronous rectification technology (MSRT) and advanced MPPT control algorithm,with dual-core processor architecture and common negative design, has the features of high response speed, high reliability, and highindustrial standard. MSRT can guarantee very high conversion efficiency in any charge power, which sharply improves the energyefficiency of solar system; Advanced MPPT control algorithm minimize the maximum power point loss rate and loss time, to ensure thetracking efficiency, corresponding speed as well as high conversion efficiency under high or low power, so that in any situation, Tracer ANproducts can rapidly track the maximum power point(MPP) of PV array to obtain the maximum energy of the panel. The limitation functionof the charging power and current, and automatic power reduction function fully ensure the stability when works with oversize PV modulesand operate under high temperature environment.With the adaptive three-stage charging mode based on digital control circuit, Tracer AN series controllers can effectively prolong thelife-cycle of battery and significantly improve the system performance. The load, utility or generator auto-control relays make it easy tocompose the hybrid power system. All-around electronic protections, including overcharging, over discharging, and PV reverse polarityprotection, effectively ensure the safer and more reliable operation of the solar system for a longer service time.