Inverter output function: Turning on the switch of the front panel, the inverter will convert the DC power into pure sine wave AC power.
Over voltage protection function: When the battery voltage is higher than the set value, the device will automatically cut off the inverter output when the front panel LED flash 3 times per second and the buzzer alarm frequently sound.
Under voltage protection: When battery voltage drops below the set value, the device will automatically cut off the inverter output and the LED on the front panel flash 1times per second, buzzer sound 1 times per second until voltage rise to the voltage recovery point, then the inverter back to work.
Overload, short circuit protection: if the load exceeds the rated power or a short circuit , the front panel LED will blink 2 times per second and the buzzer frequency of 2 times per second alarm sound. This cannot restore itself, please turn off the power switch and check to make sure whether the short circuit and loads within the allowed range.