1,RELIABLE: The automatic switch not only supports automatic mode, but also can be operated by manual button, simple operation, reliable performance. When A power supply fails (only normal A phase voltage and standby A phase voltage are tested, only voltage loss or phase loss is tested), one or more load circuits are automatically connected from one power supply to another to ensure normal supply of load circuits 2,MULTIPLE PROTECTION: Automatic transfer switches support many protection functions, including short circuit, overload, phase loss, undervoltage protection 3,SAFE AND FLAME RETARDANT: Made of excellent flame retardant PC materials, possess good insulation, high temperature resistant, aging resistant, safe and reliable, using silver contacts can greatly improve the conductivity and service life of the product 4,FOR HOUSEHOLD: The ATS has compact structure, reliable transmission, convenient installation and maintenance, long service life, can be installed vertically or horizontally, convenient and reliable power installation 5,WIDE APPLICATION: Converts the common power supply to the standby power supply automatically or manually. The switch is mainly used in hospitals, shops, banks, chemical, metallurgy, high rise buildings, military facilities and other important occasion that do not allow power outage Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.