ITEM NAME:DC Voltage Regulator Regulator XH-M401 XL4016E1 High-Power Buck Module N9T3 DC Voltage Regulator Regulator XH-M401 XL4016E1 High-Power Buck Module N9T3 Model Number: XH-M401 Type: Voltage Regulator Operating Temperature: standard.Match 3: dc buck converter. Chip: switching regulator Regulating chip XL4016 with Over current protection, Over temperature protection,Short circuit protection. match 6: 100w step down module. match 2: dc - dc.