Serial Number Check

  • 6 May 2024
  • 1 reply

I purchased an Era 100 from a big chain electronic store in April. The box was factory sealed when I picked it up

Then I sold this factory sealed box to someone on  May 5th (Note that i have never opened this box). Few hours later this person contacted me back and told me the unit in the box is a used One Gen2. 

I can think of 2 possibilties:

#1: Someone at the electronic store swapped it before I bought it;

#2: The person who bought from me is not telling the truth.

So I'm just wondering if there is a way to check when this unit was activated. If it was already activated and used before May 5th, then we know it's #1, and vice versa.


Any help is appreciated. 


Serial number (ERA 100)

A100 2301LV *****************


Serial number (One Gen 2)

A201 1909CP *****************


Moderator edit: serial numbers recorded and removed


Best answer by Corry P 6 May 2024, 12:54

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1 reply

Userlevel 7
Badge +18

Hi @Long515 

Welcome to the Sonos Community!

We can’t give out any information due to data protection laws. If you suspect foul-play, I recommend you contact your local law enforcement and ask them to contact us on your behalf.

For what it’s worth, the serial number you provided for the Sonos One is invalid.

I hope this helps.