What is the function of an uninterrupted power supply (UPS)?

An uninterrupted power supply (UPS) is designed primarily to provide battery backup in the event of a power failure. When electrical power is interrupted or fails, the UPS automatically switches to battery power, ensuring that connected devices can continue to operate without interruption. This is particularly important for sensitive electronic equipment, such as computers and medical devices, where an unexpected loss of power could lead to data loss or equipment damage. The UPS not only provides temporary power but also often includes surge protection to safeguard devices from spikes in electrical supply when power is restored.

The other options relate to different functions that are not the primary role of a UPS. While internet connectivity, temperature maintenance, and sound quality are essential in various contexts, they fall outside the primary purpose of ensuring reliable power supply during electrical interruptions.