1、The radiator adopts fanless design so that the dust is not easy to enter the controller. 2、Good sealing property, low power consumption, effectively avoiding the noise. 3、Automatically recognize system voltage, high efficient PWM charging method, extending battery life and improving system performance. 4、Adopts high speed CPU processor with superior performance to realize intelligent temperature control. 5、Overtemperature protection prevents solar charge controller and connected equipment from damage. 1 x Solar Charge Controller1 x Probe1 x Terminal1 x English Manual Item Type: Solar Charge ControllerModel: JN-R (48V)System Rated Voltage: 48VBattery Maximum Voltage: 15V/30V/60VPhotovoltaic Panel Maximum Voltage: 22V/44V/88VRated Charging Current: 30A, 40A, 50A, 60A (Optional)Charging Circuit Voltage Drop: 50.7VDischarge Circuit Voltage Drop: 50.2VStatic Loss: 0.2WCommunication: RS485/RJ45 InterfaceUSB Output: 0.5A/5VOvertemperature Protection: Full current below 75℃, half current from 75℃ to 90℃, close charging above 90℃LCD Temperature Range: -20℃~75℃Operating Environment: -20℃~50℃Storage Temperature: 30℃~70℃Protection Grade: IP30Terminal: 10-16mm² Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.