Stopwatt cleans the electricity in your home and reduces unnecessary energy consumption that you still have to pay for. Stopwatt's functions include voltage stabilization, current synchronization, and energy savings. The design of Stopwatt is advanced, but it is simple to use and does not require technical knowledge to operate effectively.Improves equipment performance and reduces electrical interference. Stopwatt helps protect electronic devices by reducing electrical noise, which may enhance audio and video signal clarity, minimize interference in wireless systems, and improve the overall reliability of electrical equipment.Supports comfortable living by helping reduce electricity costs without sacrificing the use of essential appliances. You can continue using refrigerators, fans, air conditioners, and other necessary devices while potentially lowering your energy bills with the Stopwatt energy saver.Easy to use: Simply plug the device into a standard wall outlet. The green indicator light confirms it is working. No special setup, maintenance, or ongoing attention is required. Helps improve power efficiency and reduce wasted electricity.Suitable for multiple applications: One Stopwatt unit can be used in homes, shops, restaurants, offices, and small factories. Compatible with common household appliances such as air conditioners, washing machines, refrigerators, electric fans, pumps, stereos, and fluorescent lamps.Plug Type: US Plug (compatible with countries using standard US outlets including Canada, Mexico, Thailand, Taiwan, Philippines, and others) 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 shown in images and the actual product. Measurement error allowance is +/- 1-3 cm.