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. Item Type: Solar Controller Material: Cast Aluminum, PC Maximum Input Voltage: 150V (at minimum temperature), 138V (at standard 25℃) System Voltage: 12V 24V 36V 48V Self Identification Self 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 55.2V Absorption: 14.4V 28.8V 43.2V 57.6V Equalization: 14.6V 29.2V 43.8V 58.4V Undervoltage Protection: 10.8V 21.6V 32.4V 43.2V Undervoltage Recovery: 12.6V 25.2V 37.8V 50.4V Load Control Mode: Normal time control, optical control, optical time control, timing control, reverse optical control Light Control Point Voltage: 5V 10V 15V 20V Battery 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 3.2V Operating Temperature Range: -20℃ to 55℃ Storage Ambient Temperature: -30℃ to 80℃ Humidity: 10%-90% without condensation 1 x Solar Controller 1 x Temperature Sensor 1 x Protection Cover 4 x Gaskets 4 x Screws 1 x User Manual