35V~8A Auto Step-Up/Step-Down DC-DC Converter Module – HandsOn Tech
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DC-DC Adjustable Step-Down Voltage Regulator Module. With Volt Meter.
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LM2577 DC DC Boost Step Up Module Converter Digital Voltmeter Display Voltage Meter 3A Output 3 34V to 4 35V|step up|dc-dc step updc-dc boost converter - AliExpress
Super Mini DC-DC Module- Mini-360 | Makerfabs
DC DC Buck Converter CC CV Power Module 0.6 30V 5A Adjustable Regulated power supply Voltmeter ammeter CNC Color screen 80W|Multimeters| - AliExpress
DC-DC Fast Charge Module 6~32V to 5V/3A - DFRobot
Module DC/DC step-down 1,25-32V/5A, USB, LED display | GM electronic COM
XL4015 Step-Down DC Module with CV/CC Control
30V~10A Auto Step-Up/Step-Down DC-DC Converter Module – HandsOn Tech