Toddler monitoring

Hi friends, I was just thinking about having some methods for monitoring my toddler when he is sleeping. He is just 11 months old and I usually make him sleep in a cradle. I’ m always concerned about his safety. I just don’t know whether is this the time to change his sleep from cradle to bed. I have a babysitter coming for my child, but still I am not satisfied. I am afraid to shift him to bed. Everybody is telling to make it a practice at his earlier ages. I have heard about many security devices for monitoring. But don’t know which is suitable for my child. Can anyone help me? I have went through this blog suggested by my friend. [ ] It is saying about some video monitoring devices. Have you ever tried this kind of things? Please feel free to share.