Has anyone got their house wired who leaves their baby with a nanny alone?? Does it really help?

In between my switching of jobs, I opted not to send my baby to daycare and instead kept a nanny for him. And because I kept worrying the whole day about how she would be keeping the baby at home, I installed CCTV at home. Trust, if there's no support system where you can feel your baby is as safe as he will be with you, having CCTV's in the house is mandatory. During the period when I was working, I could see how she was handling the baby and whether she was feeding him on time or not. But, yes, I had informed the nanny that we have CCTV at home, so that she doesn't even think of doing something untoward. In her case, she was a very nice woman, I did not want her to feel betrayed, and wanted to tell that everything that happens in the home is being monitored.