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In S-Series the serial number is found on the left side of the unit (from the perspective of someone facing the front of the Smart Recorder) on a white sticker. The part number is found on the right side of the unit.
First three characters: BMS or AVS
Second two characters: Month of production (01-12)
Third four characters: Year of production
Fourth remaining characters: Unique serial #
In P-Series the serial number is found on the front on a white sticker, behind the front panel. It is also on the back next to the part number.
First three characters: BMD or AVD
Second two characters: Month of production (01-12)
Third four characters: Year of production
Fourth remaining characters: Unique serial #
In S-Series 2
First three characters: AVT
Second two characters: Month of production (01-12)
Third four characters: Year of production
Fourth remaining characters: Unique serial #
5000 Appliance Series
First three characters: AVA
Second 2 characters: Month of production (01-12)
3 rd 4 characters: Year of production
4 th remaining characters: Unique serial #
1000 Appliance Series
1 st 3 First three characters: ADK
Second two characters: Month of production (01-12)
Third four characters: Year of production
Fourth remaining characters: Unique serial #
2000, 2100, 3000 & 4000 Appliance Series
First three characters 002- or 003-
Second seven remaining characters – Dyslexic anagrams referencing Former US presidents up to the 21st century