In order to meet government policies and save energy in the era of high inflation, this product has obtained the high efficiency certification of the Korea Energy Management Agency.  This product is automatically converted  to high efficiency and energy-saving mode and can be operated unmanned.  When the load of the UPS drops below  10% of its capacity, it automatically shuts down the inverter and switches to a commercial power supply. If there is a power outage in the commercial power state, it will automatically operate in an uninterrupted state. In sleep mode, it prevents unnecessary discharge of the battery and prolongs its lifespan.
Even in sleep mode, when the load increases, it automatically switches to the inverter state.  The disadvantage is that the manufacturing price is increased by adding energy management mode switching circuits, high-efficiency improvement circuits, etc.