This is a voltage protector designed for automatic protection of home appliances against under-voltage, over-voltage, and power interruption. Low or high supply voltage may impair normal operation, reduce service life, or damage compressor motors in air conditioners, refrigerators, and freezers. Sudden power loss and restoration can cause voltage surges that pose a risk to compressors. This device instantly disconnects the load and provides a delayed restart to protect compressors. Applications: 1. Plug the protector into a wall socket, then connect the appliance (e.g., air conditioner, refrigerator, freezer) to the protector’s output socket. 2. The unit can be mounted on a wall using the hanging hole on the back. Compatible devices: Air conditioners, refrigerators, freezers. Notes: 1. Do not install in high-temperature or high-humidity locations. 2. Avoid use in dusty or highly oxidized environments, as this may cause premature failure. Specifications: 1. Input voltage/frequency: 220V/50Hz or 110V/60Hz 2. Voltage protection range: 90V ±3% to 130V ±3% (60Hz); 180V ±3% to 250V ±3% (50Hz) 3. Maximum current rating: 16A 4. Restart delay time: 180 seconds 5. LED/LCD display shows real-time voltage and operating status 6. Five protection modes: over-voltage, under-voltage, power interruption, surge/spike, and overload Product dimensions: 5.2 × 9 × 3.5 cm Also suitable for: TVs, LCD/Plasma displays, DVD players, home theater systems, PCs, laptops, washing machines, dryers, ovens, dishwashers, and other non-compressor home appliances.