1、Storage Function: The photovoltaic controller has a built in industrial microchip with excellent storage function and large screen LCD display. 2、Digital Power Technology: The charge and discharge parameters of the PV controller are controllable, and the circuit energy conversion efficiency is up to 98% with digital power technology. 3、Accurate Tracing: When the panel is shaded or part of the panel is damaged, there will be two or more peaks, and the controller can still accurately trace the maximum point power. 4、Multi Protection: This PV controller is equipped with internal overcurrent and shortcircuit protection, reverse connection protection, reverse current protection, etc. It produces little heat to ensure safe use. 5、Tracing Efficiency: Our PV controller can accurately trace to the proper working point within 1 second, and the MPPT tracing efficiency can be up to 99.9%. 1 x MPPT PV Controller1 x Instruction Manual Item Type: PV ControllerMaterial: ABSWeight: Approx. 282g / 9.95ozSize: Approx. 17 x 9.5 x 3.7cm / 6.69 x 3.74 x 1.46inVoltage: 5VShort Circuit Current: 2ASystem Voltage: 12V or 24V self adaptation