Stopwatt helps maintain voltage and synchronize current to support energy efficiency in your home. It is designed to reduce unnecessary energy consumption that can contribute to higher electricity usage. The unit features a compact design and is simple to use—just plug it into a standard wall outlet and the green indicator light will illuminate. No special maintenance or attention is required. This device may help improve the performance of electrical equipment by reducing electrical interference. It is suitable for use with various household appliances such as air conditioners, refrigerators, washing machines, electric fans, pumps, o systems, fluorescent lamps, and more. It may contribute to improved o and video signal clarity and reduced interference in wireless communication systems. Ideal for use in homes, shops, offices, restaurants, and small factories. Compatible with standard US plug outlets, suitable for use in countries including Canada, Mexico, Thailand, Taiwan, the Philippines, and others that accept US plug types. Voltage: AC 110V Color: White Material: Plastic Package Includes: 5 x Energy Saver Units Note: The color may vary slightly due to lighting and display differences. Measurement may vary by +/- 1-3 cm.