How to set a lock code on a DM300C, DM400C, DM450C, and DM475

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Products affected: DM300C™, DM400C™, DM450C™, DM475™
Follow these steps to set up a code that will be required to use the meter:
  1. Press Menu.
  2. Select Setup.
  3. Select Lock Code/Password.
  4. Select Change Lock Code.
Note: If you currently have a lock code, you will be prompted to enter it now.
  1. Enter the new lock code.
  2. Select Accept.
  3. Re-enter the new lock code to confirm.
  4. Select Accept.
  5. At the Lock Code Enabled message, select OK.
If you require additional assistance, contact technical support. Please have your model and serial number ready.

UPDATED: May 06, 2020