I don't know of an alarm that directly uses that data but I can set a normal alarm on it. That would be nice if I could have it wake me up during a certain sleep stage; I'll keep exploring to see if I can find something like that but as of right now it seems that I have to be the link between the data and alarm. So you would recommend having it wake me up while I'm in R.E.M. and maybe use DEILD?