Silicone buttons, full-view enlarged LCD screen, buzzer prompt, double buckle 6-36V input voltage, 0.5-36V output voltage, 0-4.5A output current, 40W output power, 11 sets of storage spaceMultiple 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.[ architecture of upper and lower boards, 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 supplyProduct model:-SK40Input voltage:6-36.00VOutput voltage:0.5-36.00VOutput current:SK40: 0-4.5A Output voltage accuracy:0.3% +3 words (can be calibrated)Output power: SK40:40WOutput current accuracy:0.5% +3 words (can be calibrated)Voltage resolution:0.01V Current resolution: 0.001AData group storage:11 groups Silicone buttons: 5Screen size:1.8-inch upgraded large screen, 36x29mm viewing rangeBuzzer:yesConversion efficiency:about 88%Soft start:YesSK90:83x48x39.6mm.(Highly excluding rotary encoder)protection mechanism:Input anti-reverse connection:Yes Output anti-reverse connection:YesInput undervoltage protection (LUP):5.5-35V adjustable,factory default value 5.5VOutput overvoltage protection (OUP):0.5-37V adjustable,factory default value 37VOutput overcurrent protection (OCP):SK40:0.001-4.6A adjustable,factory default value 4.6AOutput over-power protection (OPP):SK40:0.01-41W adjustable,factory default value 41WOver-temperature protection (OTP):30-99 adjustable,factory default value 90er energy protection (OPH):0.001-4000KWh, factory default is offMaterial: plasticcolour: BlackPackage Contents: 1 x CNC DC step-up and step-down power supplyOnly 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.