1. Support firmware upgrade. Support MPPT solar charging. 2. Support serial communication, standard MODBUS protocol. dual serial ports, serial TTL and onboard 485 communication. 3. Onboard buzzer: key prompts, alarm prompts, everything has an . 4. High-precision external clock crystal oscillator to the accuracy of time, more accurate capacity/energy statistics, 48-pin powerful MCU controller, 64M frequency, faster operation speed. Product name: CNC DC step-down power supply Input voltage: 12.0-140V Output voltage: 0.0-125V Output current: 0-22.00A Output ripple typical value: 200mv VPP Output power: 2000W Voltage resolution: 0.01V Storage data group: 10 groups Screen size: larger than 1.8-inch LCD, 38x29mm visible range MPPT function: supports MPPT solar charging Current resolution: 00.01A Protection mechanism: Input undervoltage protection (): 10-145V adjustable, default 10V Output overvoltage protection (OVP): 0-130V adjustable, default 130V Output overcurrent protection (OCP): 0-23A adjustable, default 23A Output overpower protection (OPP): 0 -2200W Default Over-temperature protection (OTP): 0-110 adjustable, default 95 Over-time 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 Precautions: 1. The input cannot be connected to AC power, let alone 220V AC power 2. The maximum input voltage cannot exceed 145V. It is recommended to use it within 140V, and the positive and negative poles cannot be connected in reverse. Colour:Black Material:PCB+electronic components+plastic Package Contents: 1 x Adjustable Constant Voltage and Constant Current Module 1 x Display Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.