Vital Compressor Protection with 3-Minute Delay: Sudden power restoration after a blackout can destroy your refrigerator's compressor. This device automatically delays power connection by 3 minutes, neutralizing harmful voltage fluctuations and unstable grids to extend your appliance's lifespan. Instant Power Loss Alert for Garage & Basement: Never wake up to a puddle of water again. If a breaker trips or power fails, the siren triggers immediately. The built-in rechargeable battery keeps the alarm sounding for 8+ hours, ensuring you hear it even if the outage happens overnight. High/Low Voltage Guard for Sensitive Contents: Automatically cuts power when voltage drops below 90V or exceeds 135V. Essential for protecting expensive frozen foods, breast milk, or temperature-sensitive medications (like insulin) from spoiling due to brownouts or voltage spikes. Adjustable 120dB Siren with 5 Distinct Tones: Features a piercing 90-120dB volume loud enough to be heard from another floor. Choose from 5 different melodies to distinguish this alarm from your doorbell or smoke detectors, avoiding confusion during emergencies. Plug-and-Play Peace of Mind: No complex wiring required. Simply plug your upright freezer or chest fridge into this outlet. Ideal for homeowners living in areas with frequent lightning storms or unstable power grids. A small investment to prevent hundreds of dollars in food loss.