The overall quality of this monitor is good. Very good sensitivity, and volume. You will definitely hear what is going on. The reception range is disappointing though. With a couple of walls in the way, it barely makes it down the hall. I have been using this for two weeks, but will probably be returning it once I find one that works better. Even with the voice activated mode, it makes a lot of static. Every time it loses it's link, it beeps and makes noise when it reconnects. We don't know if our baby made a little noise that triggered it, or if it was a lost connection. The parent units will operate portably on the rechargeable batteries, but they are rather large and clunky. Also, I was very disappointed to find that it doesn't have an accommodation in the nursery unit for batteries in case of power loss.