Features 1、Great Charging Efficiency: MPPT PV solar controller can provide great charging efficiency. Maximum charging efficiency of 98% solar photovoltaic cells can be achieved. 2、Intelligent Protection: MPPT PV solar controller is with intelligent protection functions, such as overcharge, overdischarge, overload, etc. 3、Automatically Identify: MPPT solar charging controller can automatically identify 12V or 24V batteries and realize automatic voltage regulation charging. 4、Simple to Install and Operate: This MPPT solar charging PV controller is simple for installation and easy to operate. Friendly to novices. 5、Made of Plastic Material: Our solar charging controller is made of plastic material with excellent workmanship and robust. Specification Item Type: Controller Material: Plastic Size: Approx. 19 x 10 x 5cm / 7.5 x 4 x 2in Use: For solar photovoltaic charging system Package List 1 x Solar Charging Controller