This professional power meter socket is your ideal assistant for home and office energy management Equipped with high-precision measurement chip, it accurately monitors real-time power, voltage, current and cumulative electricity consumption with ±2% measurement accuracy Supports multiple national voltage standards including EU 230V-250V, US 120V, UK 230V, Australia 240V and more, meeting the needs of users in different regions Built-in smart electricity cost calculation system allows you to set local electricity rates and automatically calculate appliance operating costs, helping optimize energy usage and save on electricity bills When detecting current or power exceeding safety thresholds, the device automatically triggers overload alarm function to effectively protect your electrical equipment 7-page data interface provides comprehensive electricity analysis including running time statistics, power factor monitoring, grid frequency detection, maximum and minimum power recording functions Suitable for energy consumption monitoring of various household appliances, office equipment and industrial equipment, making it an essential tool for energy conservation and cost control User-friendly operation interface with one-button switching between different data display modes, allowing you to easily monitor electricity usage