Solar charge controller, built-in industrial microcontroller. Large LCD display, all adjustable control parameters of the system. Fully 4-stage PWM charging management. Integrate all necessary protection measures including short circuit protection, open circuit protection, reverse polarity protection, overload protection. Dual mosfet reverse current protection, low heat generation. Features: Easy and convenient to assembly: Our solar panel regulators are easy and convenient to assemble and operate, the whole process is easy and time saving, don't need other tools, which will bring much convenience in your daily life. Improve the efficiency of the system: Charge controller has extension protection, comprehensive charging can improve the efficiency of the system, extend the life of battery and keep the load working normally, but also effectively ensure the stability of the system. Specifications: Material: ABS engineering plastic shell Color: as picture shown Package includes: 2 x Outdoor solar controllers Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.