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 (http://www.eheim.com/base/eheim/inhalte/indexbc94.html?key=liniendetail_28394_ehen), lights (http://www.aquacave.com/searchresult.aspx?CategoryID=129)).

I would like to purchase these 2 items for this purpose: - http://www.futurlec.com/Opto_Relay_4.shtml - http://www.futurlec.com/DC_Opto_Output_4.shtml

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?

Thanks

Sure

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 ...http://www.eheim.de/eheim/pdf/en/anleitungen/pumpen/1048_3148_universal.pdf