Relay board - quick question

Hi, My project (another tank arduino controller) is progressing well and now I need to connect some 12V devices (pump, PC fan, etc...) and some 220V devices (tank heater, pumps (, lights (

I would like to purchase these 2 items for this purpose: - -

I do not want to go for a DIY solution for that, so can you tell me if they will match the needs I described?



Just make sure your loads are less than the rated outputs (current in amps).

Should work fine

I am going to try to check that, the fact is that you easily have access to the power of the devices, not often to their needs in current ...