Features: 1.Smart sloar charge/discharge controller with user?friendly LCD display, image LCD graphic sign, easy to recognize and read. 2.Simple button operation, settable control parameters, you can set flexibly to meet your different application needs. 3.Intelligent PWM solar charge controller, system voltage level automatic identification. With charge and discharge safety hours accumulation function, safe to use. 4.Automatic temperature compensation, charge and discharge control parameters are adjustable. 5.Multiple protection, support battery reverse discharge protection, battery under voltage protection, battery reverse connection protection, overload, short circuit protection. Specification: Item Type: Solar Charge Controller_x000D_ Material: Plastic_x000D_ _x000D_ Size: Approx. 130 x 190 x 62mm/5.1 x 7.5 x 2.4in_x000D_ Standard: CM5024_x000D_ Rated Voltage: 12V/24V Battery Voltage_x000D_ Maximum Charge and Discharge Current: 50A_x000D_ Solar Panel Input Voltage Range: 18V-800W/36V-1700W_x000D_ Load Working Time Setting: 1-24 Hours Adjustable_x000D_ Charging Mode: PWM_x000D_ Overpressure Protection: 17V/34V_x000D_ Full Disconnect: 13.7V/27.4V_x000D_ Undervoltage Disconnection: 10.5V/21V_x000D_ Over-Discharge Recovery Voltage: 12.2V/24.4V_x000D_ No-Load Loss: 10mA_x000D_ Loop Step-Down: 170mV_x000D_ Temperature Compensation: -4nv/Cell/C_x000D_ Wiring Specification: >3#AWG25mm2_x000D_ Working Environment Temperature: -25 - 55