This voltage protector provides automatic protection for home appliances against under-voltage, over-voltage, and power interruptions. If the supply voltage is too low or too high, it may affect normal operation, reduce service life, or damage compressor motors in air conditioners, refrigerators, and freezing cabinets. Sudden power outages and restarts can create strong voltage surges that are harmful to compressors. This device immediately disconnects the load and ensures a time-delayed restart, offering effective protection for compressors. Applications: Plug the protector into the power outlet, then connect the air conditioner, refrigerator, or freezing cabinet into the output socket of the protector. The unit can be mounted on the wall using the hanging hole located on the back panel. Compatible devices include air conditioners, refrigerators, and freezing cabinets. Installation Notes: Do not install the protector in areas exposed to high temperature or moisture. Avoid using in dirty environments where severe oxidation of the plug may occur, as this could lead to premature damage. Specifications: - Rated voltage: 220V, 50Hz; 110V, 60Hz - Voltage range: 90±3%–130±3% (for 110V systems); 180±3%–250±3% (for 220V systems) - Maximum current: 16A - Start-up delay time: 180 seconds - LED/LCD display shows real-time voltage and operational status - Offers 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 TV, LCD, Plasma, DVD, home cinema systems, PC, laptop, washing machine, refrigerator, dryer, oven, dishwasher, and other household appliances without compressors.