Feature: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.Specification: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 90LCD Temperature Range: -20~75Operating Environment: -20~50Storage Temperature: 30~70Protection Grade: IP30Terminal: 10-16mm.Package List:1 x Solar Charge Controller1 x Probe1 x Terminal1 x English Manual