Features: 1. The use of high-quality PCB materials, quality assurance, greatly improving the service life of the product 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, safer and more secure use. 4. The product supports serial communication standard Modbus protocol, support for firmware upgrade, support for MPPT solar charging, comprehensive functions. 5. The product has a wide range of applications, there is a backflow prevention function can be charged to a variety of rechargeable batteries, and with MPPT function to support MPPT solar charging, can be connected to the external temperature probe to support over-temperature protection and so on! SK60: Parameter: Input voltage: 6.0~36V Output current: 0~5.000A Output power: 60W Voltage resolution: 0.01V Conversion efficiency: 88% or so Output Voltage: 0~36V Voltage accuracy: ±0.5%+1 word Current accuracy: ±0.5%+3 words Current resolution: 0.01A Storage data group: 10 groups MPPT function: Support MPPT solar energy Charging buzzer: Yes Soft start: Yes Protection mechanism: Input anti-reverse connection: Yes Output anti-reverse: Yes Input undervoltage protection: 5.5-36V adjustable, default 5.5V Output over-voltage protection: 0-38V adjustable, default 38V Output overcurrent protection: 0 -5.2A adjustable, default 5.2A Output over power protection: 0 -80W adjustable, default 65W Over-temperature protection: 0-110°C adjustable, default 95°C Timeout protection: 0 -100H adjustable, default off Over capacity protection: 0~9999AH adjustable, default off Super energy protection: 0~4200KWH adjustable, default off Package include: Adjustable boost and buck module *1 SK120 Parameter: Input voltage: 6.0~36V Output current: 0~6.000A Output power: 120W Voltage resolution: 0.01V Conversion efficiency: 88% or so Output Voltage: 0~36V Voltage accuracy: ±0.5%+1 word Current accuracy: ±0.5%+3 words Current resolution: 0.001A Storage data group: 10 groups MPPT function: support MPPT solar charging Buzzer: Yes Soft start: Yes Protection mechanism: Input anti-reverse connection: Yes Output anti-reverse: Yes Input undervoltage protection: 5.5-36V adjustable, default 5.5V Output over-voltage protection: 0-38V adjustable, default 38V Output overcurrent protection: 0 -6.2A adjustable, default 6.2A Output over power protection: 0-150W adjustable, default 125W Over-temperature protection: 0-110°C adjustable, default 95°C Timeout protection: 0 -100H adjustable, default off Over capacity protection: 0~9999AH adjustable, default off Super energy protection: 0~9999KWH adjustable, default off Package include: Adjustable boost and buck module *1 SK150 Parameter: Input voltage: 6.0~36V Output current: 0~7.000A Output power: 150W Voltage resolution: 0.01V Conversion efficiency: 88% or so Output Voltage: 0~36V Voltage accuracy: ±0.5%+1 word Current accuracy: ±0.5%+3 words Current resolution: 0.001A Storage data group: 10 groups MPPT function: support MPPT solar charging Buzzer: Yes Soft start: Yes Protection mechanism: Input anti-reverse connection: Yes Output anti-reverse: Yes Input under-voltage protection: 5.5-36V adjustable, default 5.5V output Over-voltage protection: 0-38V adjustable, default 38V output Over-current protection: 0 -7.2A adjustable, default 7.2A output Over power protection: 0-180W adjustable, default 160W Over-temperature protection: 0-110°C adjustable, default 95°C Timeout protection: 1 minute -99 hours 59 minutes, default off Over capacity protection: 0~9999AH adjustable, default off Super energy protection: 0~9999KWH adjustable, default off Package include: Adjustable boost and buck module *1