I just had to mention it is incredibly hot as you cannot keep your finger on it longer than 3s (thermometer shows well under 85C). The setup is still exposed to open area though. I've already lost one channel of this relay board and don't want to lose another one for the same reason.
Available SSR comes with this information:
Rated output load: 2A at 100 to 240VAC. (50/60Hz)
Is it still fine for 12 amps?