Feature: 1. Automatic Energy Saving: Power saver automatically helps you save daily energy waste, save money, and be safe and reliable. Gr 2. Surge Protection: Voltage regulation, balance current, surge protection, to achieve the effect of power saving, effectively prevent overheating of electrical appliances, and prolong the service life of electrical equipment. 3. Comprehensive Protection: The power saver's internal leakage protection measures ensure complete protection for you and your equipment. And improve the power of electrical appliances to avoid waste of ineffective electricity. 4. Indicator Light: Plug the power saver into an AC outlet, and the color of the indicator light will turn green, then start working by keeping the device connected. 5. Scope of Application: Energy saver can be used in homes, shops, restaurants, offices, small factories, etc., suitable for air conditioners, washing machines, refrigerators, electric fans, TVs, water pumps, stereos, etc. Specification: Item Type: Smart Electric Box Energy Saver Material: ABS Model: SD 001 Rated Frequency: 50-60Hz Effective Load: 30000W. Package List: 4 x Smart Electric Box Energy Saver 4 x User Manual