The data on the anovay site seems to all say 10A (or 7A for the 1C version) as the maximum rated load current. I don’t see 1A anywhere. I think you’d be safe a 10A for the relay. The PCB is another question altogether.
Relay ISOx16 Module
No more relay-noise issues that cause processors to reset. This optically-isolated relay module includes 16 1A relays. The module uses Y socket making it simple to add many of these to any mainboard.
Guys, I spoke with Proto-Pick this morning about an order i placed. while on the phone i asked them about stocking more than the current list of Gadgeteer modules. They are happy to do this we just need to email them what we want and they will get it added to the website so we can order it. They order from GHI every two weeks.
Anywho email a guy called Ewen Fisher (sales at proto-pic .co .uk)
Edit : Its sales at relchron.com ignore the above address!!!