There are various synonyms for the phrase "power save function." Some of the most commonly used phrases include energy-saving mode, low power mode, sleep mode, and power management mode. These terms refer to the feature found in electronic devices that enables them to conserve energy or power when not in use or when used minimally. The objective of such a mechanism is to reduce energy consumption and ultimately cut down on the electricity bills. While some devices may come with these features out of the box, others require manual configuration. In either case, power-saving functions are an essential tool for environmental conservation and sustainability.