1. The front of the shell has an air inlet, and the reasonable air outlet and heat dissipation structure can effectively take away the heat inside the shell, making the power supply run efficiently and reliably. 2. LCD screen layout is reasonable, the font is large and full of rounded, professional power supply LCD screen, you want the function it has! 3. Built-in buzzer, key prompts, alarm prompts, and more use of the product. 4. Upgraded plug-in terminals, easy to disassemble and replace. 5. The product has a wide range of applications, with MPPT function, support for MPPT solar charging, can be connected to the external temperature probe to support over-temperature protection. Parameter: Input voltage: 12-72.00V Output current: 0-6.000A Output power: 390W Voltage resolution: 0.01V Output Voltage: 0-65V Voltage accuracy: 0.5%+1 word Current accuracy: 0.5%+3 words Current resolution: 0.001A Storage data group: 10 groups Number of buttons: 5 Screen size: Over 1.8-inch LCD with a viewable area of 38 x 29mm Buzzer: Yes Soft start: Yes Output ripple typical value:vpp-150mv Efficiency of conversion: About 95% MPPT function: Support MPPT solar charging Protection mechanism: Input anti-reverse connection: Yes Output anti-reverse: Yes Input undervoltage protection: 10-75V adjustable, default 10V Output over-voltage protection: 0-67V adjustable, default 67V Output overcurrent protection: 0-6.2A adjustable, default 6.2A Output over power protection: 0-420W adjustable, default 400W Over-temperature protection: 0-110C adjustable, default 95C Timeout protection: 1 minute -99 hours 59 minutes, default off Over capacity protection: 0-9999AH adjustable, default off Super energy protection: 0-4200KWH adjustable, default off Colour:black Material:Plastic + Aluminum Alloy The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * DC 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.