I needed a babysitter so I bought this device. No kidding, excellent product. I had to return it at first because the monitor was broken. Went, fast and smoothly. It has soo many professional features that I could not figure out just yet. I had to call the company twice to help me install it properly, but to be honest I was lazy to really read the booklet. I wish I would buy the 16 cameras instead the 4 what I have. I love it.