I found the datasheet for the QM4x1-D24 relays.
There is a lot of provided information here. I'm not sure what I should be looking for.
In other posts I think I've seen people calculate minimum current requirement to turn on the relays by using the electromagnetic voltage requirements and resistance using Ohm's Law.
Does anyone know what voltage / resistance I should use on the sheet? Or which current tells me the minimum to turn on the relay from my Arduino mega.