Features:The controller is suitable for automatic control of charging and discharging processes in a solar off-grid system (independent system). The controller's battery charge and discharge process is optimized to extend battery life and improve system performance. Its comprehensive self-test and electronic protection features prevent controller damage due to installation errors and system failures. It has wide applicability, automatic recognition of day and night, LCD display and button man-machine interface, complete menu display and operation. User-friendly design of the browsing interface to facilitate various operations. Complete set and modification of field control parameters.Specifications:Rated Voltage: 12/24V Automatic Identification: 48VStrong Charging Voltage: 14.8V/29.6V/59.2VBalanced Charge: 14.5V/29.0V/58.OVFloating Charge Voltage: 13.7V/27.4V/54.8VUndervoltage Protection: 10.8V/21.6V/43.2VUndervoltage Recovery: 13V/26V50.0VMaximum Charging Current: 10A/20AMaximum Load Current: 10A/20AOverload Protection: 1.2 Times 3s Recovery, 1.5 Times 10s Recovery, More Than 2 Times Need To Be Manually RepairedMaximum Wiring Diameter: 4mm/0.16ozWorking Temperature: -40 to 60 Degrees CelsiusWeight (Gross Weight): 0.4kg/14.12ozProduct Size: Approx. 16.5*9.3*5cm/6.5*3.66*1.97inPacking Size: Approx. 17.5*11*6cm/6.89*4.33*2.36inProtection Level: 1P56Weight: 0.527kg/18.59oz Package List:1 * Controller1 * Instruction Manual1 * Control Line Note:Please allow 0-2cm/mm error due to manual measurement. Thanks for your understanding. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.