The present invention relates to an inverter device. Regard to the problem in the traditional convert device that the user is difficult to obtain the information shown on the display panel in time; the state of the inverter can not be switched remotely after the user leaves; discharging or early switching-off caused by missing battery information; and the draught fan can only be at the state of ‘full-speed-start’ or switch-off, the invention provides an inverter device, it is configured with an extensible flexible wire to fix the display panel of the inverter to the place the user wants to for getting the information of the inverter in time; by virtue of wireless transmission, user can control the state of the inverter remotely; by adding a test module to the inverter device, it avoids the waste of electricity which is caused by the discharging of the battery-to-convert and switching off.