Support serial communication, standard MODBUS protocol, support firmware upgrade, support MPPT solar charging. Visualization range 38x29mm, LCD screen is bigger than 1.8 inch! LCD screen layout is reasonable, the font is large, full and rounded, professional power supply LCD screen. The display board adopts immersed gold design, conductivity is better, more ! Shell using one-piece molding shell, flame retardant material more secure! Double-layer buckle design, double circuit board fixed more firmly. High-precision external clock crystal, to the accuracy of the time, capacity/energy statistics more accurate, 48-pin powerful MCU controller, 64M frequency computing speed faster! Built-in buzzer button prompts, alarm prompts have an . Input voltage: 12.0-72V Output Voltage: 0-65V Voltage accuracy: +0.5%+1 word Current accuracy: +0.5%+3 words Voltage resolution: 0.01V Current resolution: 0.001A Conversion efficiency: about 95% Soft start: Yes Buzzer: Yes MPPT function: support MPPT solar charging About the protection mechanism: Input anti-reverse connection: Yes Input undervoltage protection (): 10-75V adjustable, default 10V output Over-voltage protection (OVP): 0-67V adjustable, default 67V output Over Temperature Protection (OTP): 0-110℃ adjustable, default 95℃ Overtime Protection (OHP): 1 minute-99 hours and 59 minutes, default off Over capacity protection (OAP): 0-9999Ah adjustable, default off Over-energy protection (OPH): 0-4200KWH adjustable, default off Specification:XY6506X: Output current: 0-6.000A Output power: 390W Output over power protection (OPP): 0-420W, default 400W Overcurrent Protection (OCP): 0-6.2A, default 6.2A Colour:As Shown Material:Plastic Package Contents: 1 * DC step-down power supply Only the above package content,