Description: 【Dual Power System】: This Dual Power Automatic Transfer Switch is designed to automatically alternate between cities power and generator power, ensuring a consistent supply of electricity. 【High Power Capacity】: With a 2P 100A design, this changeover switch is suitable for high power devices, and operates at millisecond speed to ensure stable power supply and uninterrupted protection. 【Automatic Conversion】: No manual operate is required as the operation is smart and automatic. It provides electrical protection to prevent damage to your appliances. 【Material Composition】: Made from ABS and metal materials, and Dual Power Generator Changeover Switch is fit for common 220V electrical appliances. 【Versatile Use】: Automatic Transfer Switch is Suitable for various scenarios including home use, commercial use, etc. Specification: Material: ABS and Metal Color: White Size Chart: 10.7cmx7.6cmx10.5cm/4.21inchx2.99inchx4.13inch Package Includes: 1 Dual Power Automatic Transfer Switch Note: Please allow slightly errors 1-2cm differences due to manual measurement.