What does error 64 mean on a HandKey II or Handpunch?

When you see an Error 64 on a HandKey or a HandPunch, it may mean that the lithium battery is low or there is a disconnect with main board.  The first step is to replace the lithium battery on the main board.  A replacement battery can be purchased at any electronics store.  If after replacing the battery, the Error 64 does not clear, please contact Technical Product Support as it will most likely need an RMA to fix in factory.

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