This voltage protector provides automatic protection for home appliances against under-voltage, over-voltage, and power interruptions. When the supply voltage is too low or too high, it can negatively affect appliance performance, shorten service life, or cause damage to compressor-based devices such as air conditioners, refrigerators, and freezers. Sudden power outages and re-energizing from the grid can create strong voltage surges that may harm compressors. This device automatically disconnects the load and ensures a time-delayed restart, offering effective compressor protection. Applications: Plug the protector into a wall outlet, then connect appliances such as air conditioners, refrigerators, or freezers into the output socket of the protector. The unit can be mounted on a wall using the built-in hanging hole on the back case. Compatible Devices: Air conditioners, refrigerators, freezers. Usage Notes: Do not install in areas exposed to high temperature or moisture. Avoid use in dirty environments where severe plug oxidation may occur, as this could lead to premature device failure. Specifications: - Input Voltage: 220V, 50Hz or 110V, 60Hz - Voltage Protection Range: 90±3% to 130±3% (60Hz); 180±3% to 250±3% (50Hz) - Maximum Current: 16A - Restart Delay Time: 180 seconds - LED/LCD display shows real-time voltage and operating 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 Suitable for use with TVs, LCD/Plasma displays, DVD players, home theater systems, computers, laptops, washing machines, refrigerators, dryers, ovens, dishwashers, and other household appliances without compressors.