Great! Thanks!
Just learning about Electricity and Physical Computing XD
Yes, I called the shop and they suggested I don't use the Gadgeteer.
So, at the end I happened to purchase a solid state relay (I am attaching the picture) and a mechanical one (from YourDuino http://arduino-direct.com/sunshop/index.php?l=product_detail&p=155) which I will use in conjunction with a Sensor Shield. The 4 channel mechanical Relay Board will arrive in 2 days I hope.
But for now I was thinking about using the Solid State Relay.
I have noticed that instead of having (NO, COM, NC), for each one of the Solid State Relays there are only two inputs (called A1, B1; A2, B2; A3, B3; A4, B4) and then one unique block on top where it reads: IN1, IN2, IN3, IN4, GND, GND, VCC.
I will have a look online about how to connect the board to the Solid State relays and will send an update very soon!
