RCKnep3

The salon I recently purchased has 5 beds, one of the newer beds is linked up to T-Max manager at the front desk. I want to hook up the remaining 4. I was told it was pretty straight forward, simply get the correct wires and link them in a daisy chain. Since the T-max is already run to 1 bed, I figure I simply need to run from that bed to each of the remaining beds which should be a non issue. I was researching online how to connect the actual 3A to each bed which I still need to figure out but I ran into another issue.

I found 4 3A's from a closing salon and received them in the mail. After I received them, I found the are 1A's. I have been trying to determine the exact difference and if these can still be used? If so, how do I connect them? Thanks so much.

Edit: I am connecting to 4 2005 Prosun Lumina A