To valid the Wi-Fi function of LE-200PR the user needs to insert a SD card in which a setting file for Wi-Fi (WLAN CFG.WL) is included. When the SD card is not inserted, the Wi-Fi is not valid and the function is disabled. This is the same for LE-150PR, LE-270AR, LE-270GR. WLAN CFG.WL file is made by an attached software.