Buck-boost modules are versatile DC-DC converters that can efficiently regulate voltage levels in electrical circuits. These modules can either step up (boost) or step down (buck) the input voltage to produce a stable output voltage. This flexibility makes them ideal for applications where the input voltage may vary above or below the desired output voltage, such as battery-powered devices, renewable energy systems, and portable electronics. Buck-boost modules ensure consistent performance and protect sensitive components by maintaining a constant output voltage despite fluctuations in the input power supply.