MICRADIGITAL F5D7630ea4A-E Manuel De L'utilisateur page 32

Note: Units sold in the United States are configured by default to use only
radio channels 1-11 as defined by FCC regulations. Units sold in
other countries are configured by default without a country code (i.e.,
99). Setting the country code restricts operation of the device to the
radio channels permitted for the wireless networks in the specified
country.
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