I would need more information to help you. But please note the following points.
1. Lupus-Electronics 10810 Lupus-12 V Has a 220V AC input and a 12VDC output. So it cannot be powered by TRB141 I/O, even with its relay function.
2. The Relay in the I/O ports supports a maximum of 30VAC/VDC at 2A. Using a higher rating might damage the device.
So based on an assumption of your needs i can suggest you 2 solutions.
1. If you need a remotely controlled 12VDC supply, you can power the TRB using the same power supply while creating a relay with the parallel connection of the power supply.
2. You can use the I/O ports to support a relay to control the Lupus device.
I can refer you materials and illustrations based on the actual requirements after receiving more information.
Hope this helps