Rion NL-42A, Instruction Manual, Page: 14 / 154

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The life of the backup battery for the internal clock of the unit is lim-
ited. You should have the battery replaced about once every fi ve years.
Regarding replacement of the battery, please contact your supplier.
Please note that this product is warranted up to the product purchase price
against defects in material.
Never format optional program cards such as the NX-42EX and NX-42WR
with SD memory card formatting software (such as SD Formatter, etc.).
Otherwise the program data on the card will be erased and the respective
functions can no longer be used. Restoration of the erased program is not
warranted.
This product can be used in any areas including residential areas.