Input voltage: 6-36.00V; Output voltage: 0.5-36.00V Output current: SK40: 0-4.5A; Output voltage accuracy: ±0.3%+3 words (can be calibrated) Output power: SK40: 40W; Output current accuracy: ±0.5%+3 words (can be calibrated) Voltage resolution: 0.01V; Current resolution: 0.001A Data group storage: 11 groups of silicone rubber keyboards: 5 Product name: CNC DC buck-boost power supply Product model: ZK-SK40 Screen size: Upgraded 1.8-inch large screen, 36x29mm visual range Buzzer: Yes Conversion efficiency: about 88% Soft start: Yes Product weight: SK40: net weight 103g protection mechanism: Input anti-reverse connection: yes Output backflow prevention: 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): SK40: 0.001-4.6A adjustable, factory default value 4.6A Output over-power protection (OPP): SK40: 0.01-41W adjustable, factory default value 41W Over-temperature protection (OTP): 30℃-99℃ adjustable, factory default value 90℃ Overtime protection (OHP): 1-99 hours and 59 minutes, factory default is off Over capacity protection (OAH): 0.001-9999Ah, factory default is off Overpower protection (OPH): 0.001-4000KWh, factory default is off Colour:grey Material:abs Size:SK40:83x48x29.4mm. (Height does not include rotary encoder) Package Contents: 1 * buck boost converter 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.