This voltage protector provides automatic protection for home appliances against under-voltage, over-voltage, and power interruptions. Unstable supply voltage can harm normal operation, reduce appliance lifespan, or even damage compressor motors in air conditioners, refrigerators, and freezers. Sudden power outages and restarts can create strong voltage surges that are hazardous to compressors. This device immediately disconnects the load and ensures a time-delayed restart, offering effective compressor protection. Applications: 1. Insert the protector plug into the power outlet, then connect appliances such as air conditioners, refrigerators, and freezers to the protector's output socket. 2. The protector can be mounted on a wall using the hanging hole on the back case. 3. Suitable for use with air conditioners, refrigerators, and freezers. Notes: 1. Do not install in areas exposed to high temperature or moisture. 2. Avoid using in dirty environments or where severe plug oxidation may occur, as this could lead to premature damage. Specifications: - 220V, 50Hz; 110V, 60Hz - Voltage range: 90±3% to 130±3% (60Hz); 180±3% to 250±3% (50Hz) - Current range: Up to 16A - Start-up delay time: 180 seconds - LED/LCD display shows working voltage and status - Provides five types of protection: over-voltage, under-voltage, power interruption, surge/spike, and overload protection Product dimensions: 5.2 x 9 x 3.5 cm Compatible appliances: TV, LCD, Plasma, DVD, Home cinema, PC, Laptop, washer, refrigerator, dryer, oven, dishwasher, and other home appliances without compressors.