Silicone buttons, full-view enlarged LCD screen, buzzer prompt, double buckle shell 6-36V input voltage, 0.5-36V output voltage, 0-5A output current, 90W output power, 11 sets of storage space Multiple protection anti-reverse contact backflow undervoltage protection overvoltage protection overcurrent protection over temperature protection over power protection [Performance further improved] The power is further upgraded, including an external fan port to expand the fan. [Independent architecture of upper and lower boards, independent MCU] The LCD or color screen display board can be replaced at will, and the power supply board can also be used independently. Product name:CNC DC step-up and step-down power supply Product model:ZK-SK90 Input voltage:6-36.00V Output voltage:0.5-36.00V Output current:SK90:0-5A Output voltage accuracy:±0.3% +3 words (can be calibrated) Output power:SK90:90W Output current accuracy:±0.5% +3 words (can be calibrated) Voltage resolution:0.01V Current resolution:0.001A Data group storage:11 groups Silicone buttons:5 Screen size:1.8-inch upgraded large screen,36x29mm viewing range Buzzer:yes,Soft start:Yes Conversion efficiency:about 88% protection mechanism: Input anti-reverse connection:Yes Output method anti-reverse connection:Yes Input undervoltage protection (LUP):5.5-35V adjustable,factory default value 5.5V Output overvoltage protection (OUP):0.5-37V adjustable,factory default value 37V Output overcurrent protection (OCP):SK90:0.001-5.2A adjustable,factory default value 5.2A Output over-power protection (OPP):SK90:0.01-91W adjustable,factory default value 91W Over-temperature protection (OTP):30-99℃ adjustable,factory default value 90℃ Overtime protection (OHP):1 minute-99 hours and 59 minutes,factory default