The ETH2020 is used to control up to 12 units of the CT3002 testers. It communicate between the computer via Ethernet and the testers.
Each ETH2020 includes the following accessories:
- A 4-port Ethernet Switch
 - 9ft Ethernet cables to connect between the Computer, ETH2020 and the Ethernet Switch
 - Serial cables to connect the battery testers.
 
Here is how the ETH2020 is connected.
Instructions to set up the ETH2020: https://landtinst.com/wp-content/download/ETH2020%20Setup.pdf
