1、MULTIPLE USAGES: MPPT solar charging controller is applicable to solar power generation system, solar street lamp, solar charger, solar light box, and RV, etc. 2、HIGH EFFICIENCY: With lithium battery self activation function, adopts efficient chip and high power point tracking technology, and the utilization rate reaches 99%. 3、GOOD PERFORMANCE: With RS485 communication, it has stable connection, less interference, better response speed and tracking efficiency, has strong practicability. 4、SYSTEM VOLTAGE: Support 12V, 24V, 36V, 48V automatic identification system voltage, maximum charging efficiency of 97%, with multi stages charging control mode. 5、CAST ALUMINUM: The solar charge controller shell is made of cast aluminum, which has good heat dissipation, not easy to deform or corrode, greatly extends the service life. 1 x Solar Controller1 x Temperature Sensor1 x Protection Cover4 x Gaskets4 x Screws1 x User Manual Item Type: Solar ControllerMaterial: Cast Aluminum, PCMaximum Input Voltage: 150V (at minimum temperature), 138V (at standard 25℃)System Voltage: 12V 24V 36V 48V Self IdentificationSelf Loss: 35mA (48V)MPPT Maximum Accuracy: 99%Maximum Charging Efficiency: 97%Charging Control Mode: Multi Stages (MPPT, absorption, floating, equalization, CV)Float Charging: 13.8V 27.6V 41.4V 55.2VAbsorption: 14.4V 28.8V 43.2V 57.6VEqualization: 14.6V 29.2V 43.8V 58.4VUndervoltage Protection: 10.8V 21.6V 32.4V 43.2VUndervoltage Recovery: 12.6V 25.2V 37.8V 50.4VLoad Control Mode: Normal time control, optical control, optical time control, timing control, reverse optical controlLight Control Point Voltage: 5V 10V 15V 20VBattery Type: Gel battery, acid maintenance free, and user defined, lithium battery 3 strings 3.7V, 4 strings 3.7V, 4 strings 3.2V, 5 strings 3.2VOperating Temperature Range: -20℃ to 55℃Storage Ambient Temperature: -30℃ to 80℃Humidity: 10%-90% without condensation