Features 1MPPT Design: Made with cast aluminum for excellent heat dissipation and maximum power point tracking (MPPT) technology, achieving a tracking efficiency of up to 99% and a peak conversion efficiency of up to 98%. The excellent charging solution even in cloudy environments. 212V 24V Auto Detection: Automatically detects the system voltage at 12V or 24V. Multiple LED indicators display solar charging and battery operation information. 3Comprehensive Safety Protection: Self diagnostic function assesses and protects your system, preventing reverse polarity, battery overcharging, battery over discharging, overload, short circuit, and reverse current. 44 Level Smart Charging: 4 level charging for acid batteries (bulk, absorption, float, and equalization) and 2 level charging for lithium batteries (bulk and absorption), as well as lithium battery activation. 5Multiple Load Control: Directly connect DC devices to optional load terminals and monitor power consumption directly from the controller or set timer control. Specification Item Type: Solar charge controllerMaterial: Aluminium alloyWeight: Approx. 734g / 25.9ozProduct Size: 150x105.6x61.5mm / 5.9x4.2x2.4inPower: 260W(12V), 520W(24V) Package List 1 x Solar Charge Controller1 x Manual