A power interrupt alarm is an essential device that informs you of any power failure or power interruption, which may cause damage to your electrical appliances or sensitive equipment. However, there are several synonyms for this phrase that might be more suitable for your specific needs. Some possible alternatives include power outage alarm, blackout alert, electricity disruption detector, power loss notifier, voltage drop alarm, and energy interruption warning. These synonyms provide a more precise description of the device's function and can be applied to various situations related to power interruptions. Regardless of the phrase used, having a device that detects and warns about power failures is important for any home or business owner.