Hello, I got an arduino starter pack recently from oomlout.co.uk. This one: http://www.oomlout.co.uk/arduino-starter-kit-ardx-p-183.html.
It includes a 5v DPTD relay. I understand what it's for and how to use it, but I don't know what to look for when buying more. The range available is all a bit confusing.
I want to control some kit which runs at 12v. I've had a look here but looking at the spec it says the voltage (12, 24 or 48) is the coil voltage, and I guess that means the switching side which I need to be at 5v?
I could do with being told what will suit my needs from here, or at least a link to another shop.
Ideally I'd like someone to either explain the difference between the different types of relay, or point me to somewhere that already exists that explains it.