Stopwatt cleans the electricity in your home and reduces unnecessary energy consumption. Stopwatt helps maintain voltage, synchronize current, and supports energy efficiency. The design is advanced, but no technical knowledge is required for operation. Improves equipment performance and reduces electrical interference. Stopwatt helps protect electronic devices, enhances o and video signal clarity, minimizes interference in wireless communication systems, and increases the reliability of electrical equipment. Enables comfortable living by reducing electricity usage while operating essential appliances such as refrigerators, fans, and air conditioners. Helps lower energy costs without sacrificing convenience. Easy to use: simply plug the device into a standard wall socket. The green indicator light confirms operation. No maintenance or additional settings required. Helps improve power utilization and reduce wasteful energy consumption. Suitable for use in homes, shops, restaurants, offices, and small factories. Compatible with air conditioners, washing machines, refrigerators, electric fans, pumps, stereos, fluorescent lamps, and other common electrical devices. Plug Type: US Plug (compatible with standard outlets in regions using US plug standards) Voltage: AC 110V Color: White Material: Plastic Package Contents: 5 x Stopwatt Energy Saver Note: Light reflection and differences in display screens may cause slight variations between the color of the item in the image and the actual product. Measurement error allowance: +/- 1-3 cm.