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Calisto 800 Series Date Code Location

This article pertains to Calisto Models 820, 820-M, 825, 825-M, 830, 830-M, 835, and 835-M.

The Date Code is located on the label on the back of the speakerphone next to the word "Date," and is formatted as MMM-YY.

Date Code location for the Calisto 800 Series speakerphone

Note that the PA50 wireless mic has its own date code. Click here to view that date code location.

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