Power failure protection is essential to ensure that your electronic devices and appliances are safeguarded against the sudden loss of electrical power. There are several synonyms for power failure protection that you can use to describe this type of technology, such as uninterruptible power supply (UPS), surge protector, battery backup, power backup, and voltage regulator. Each of these terms refers to a device or mechanism that can help you to protect your electronics and appliances against the harmful effects of power fluctuations, outages, and surges. Whether you are looking for a UPS for your computer or a surge protector for your home theater system, there are plenty of options available to help you protect your valuables.