With a relay box, your UBA5 can control an external circuit. You can add commands to open or close the relay into the battery analysis program. For example, you can have the relay close the contacts to initiate a battery discharge and have it open the contacts when the battery reaches the cut off voltage. Or use the UBA5 internal load and have the relay control a temperature chamber.
The relay modules are not a stocked item, but are made on a custom basis. We can make them with any number of contacts (but one or two are the most common). They can come with contacts of up to 50A and 240VAC.
The diagram below shows a relay module controlling an external load.