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 Controller Model: JN-R (48V) System Rated Voltage: 48V Battery Maximum Voltage: 15V/30V/60V Photovoltaic Panel Maximum Voltage: 22V/44V/88V Rated Charging Current: 30A, 40A, 50A, 60A (Optional) Charging Circuit Voltage Drop: 50.7V Discharge Circuit Voltage Drop: 50.2V Static Loss: 0.2W Communication: RS485/RJ45 Interface USB Output: 0.5A/5V Overtemperature 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: IP30 Terminal: 10-16mm². Package List: 1 x Solar Charge Controller1 x Probe1 x Terminal1 x English Manual