Product Function: Please test before each use. Follow the instructions. 1: Plug the Fi circuit breaker into a power outlet or outlet. 2: Test and make sure the light is on before use. 3: Plug in your appliances or your power tools to the fi adapter. 4: The Fi circuit breaker trips as soon as it detects a power failure, thus protecting personnel from electric shocks. The personal protection socket effectively prevents electric current accidents, and once a differential current occurs, the live conductor is separated instantly. Reliable personal protection with error current 10mA nominal. Features: Maximum power: 3500W Power: 3500W Fi circuit breaker provides additional protection against the risk of electric shock When a current leakage (10mA) is detected, it cuts off the power in 0.1 seconds to protect your family. Flame-retardant polycarbonate material, sturdy design that can be used indoors and outdoors. FI sockets can be used in high temperature, high humidity and other environments, and the temperature range is +40C at -25C. Built-in safety adapter for personal safety (220-250V), compatible with refrigerators, microwave ovens, water heaters, air conditioners and other household appliances. Package includes: Converter*1 Specifications: H3O-16 Main points: 1. Product size is measured manually, there may be errors 2. Since different monitors display different colors, please refer to the actual color you received. 3.Please confirm the size before purchasing.