I second that request! I'm currently using it as one, I just need to know if shes up or just moaning in her sleep... this does a great job of it! Baby monitors are overpriced for what they do. The key feature we need is to stop the stopping of the streaming. Everything else seems to work just fine.
+1 also a crib is shown on the box, suggesting it could do this. I would not have bought 3 extra camaras (the indoor ones) if I knew this beforehand.