@livius -- thanks so much code i used is below from pycoproc import Pycoproc expansion_identififer = Pycoproc() expansion_identififer.read_product_id() looks like: Pysense product_id = 61458 Pytrack product_id = 61459 I also inserted the Pysense example code after and it runs with no issues which is what I wanted. [image: 1516177982454-290c084a-519f-468b-b05e-ca6a4646c60d-image.png] [image: 1516178030775-ede60e62-4e39-44aa-ba38-7c2fd2f53bdc-image.png] Andrei