Features：-The outer shell of the switch is made of flame-retardant material, which is resistant to high temperatures, is not easily deformed, and is safer to use.-Sensitive response, millisecond fast power switching.-Rail-mounted installation, simple and convenient, effectively protect your electricity security and stability.-Dual power automatic switching switch is the switching of the two power supplies, divided into the common power supply and standby power supply. When the common power supply is cut off, the backup power supply will be restored to the common power supply after the common power supply is called. In special cases, automatic switching is not required, and manual switching can also be set by yourself.-Noise-free operation, small size, beau.