Buck Boost Converter, Yeeco Step Up Down Voltage Regulator DC 5-32V 12V 24V to DC 1.2-35 5V 6V 9V Adjustable Volt Transformer Power Supply Transformer Circuit Board Yeeco buck-boost converter is non-isolated boost buck converter module Our Auto Buck-Boost Board is DC 5-32V to DC 1.2-35V output adjustable The Step UP Down Voltage Regulator is built-in MOSFET, 400Khz high frequency Output Voltage Adjustable Step-up Circuit Board;Filter capacitor, TDK inductance, output with LC filter, low ripple Step Up Down Voltage Regulator Board;Size: 49 (L) * 23.4 (W) * 11.4 (H) mm