Will these wireless modules work, if so, how?

Projects General Guidance
4

i suppose this will work with simple serial transmission:

void setup()
{
  Serial.begin(1200);
}

void loop()
{
  Serial.print('A');
}

void setup()
{
  Serial.begin(1200);
}

void loop()
{
  while(Serial.available()<1);
  Serial.println(Serial.read());
}

i think this should work with the serial monitor of the IDE, if not, then you should use softwareserial (because it can be that the two serial data transmission get mixed, but i don't think they will)

i start with 1200 because a lot of devices use 1200 too, i don't think you should go lower, unless you really don't see a thing of course

the output in the serial monitor should be 65 (ascii representation of A)