1AUTOMATIC TRANSFER SWITCH: This automatic switch not only supports automatic mode, but also can be operated by manual button for easy operation and reliable performance. 2MULTIPLE PROTECTION: The switch supports multiple protection functions, including short circuit, overload, phase loss, and undervoltage protection. 3COMPACT STRUCTURE: The switch's is compact, reliable in transmission, can be installed vertically or horizontally, and the power supply is easy and reliable to install. 4DURABLE MATERIAL: The shell is made of PC material, which has good insulation, high temperature resistance and anti aging, and the silver contact can greatly improve the conductivity. 5WIDE APPLICATION: The switch is mainly used in hospitals, stores, banks, chemical industry, metallurgy, high rise buildings, military facilities and other important occasion where power failure is not allowed.