Both Day & Night Viewing - The camera automatically senses when the room becomes dark and switches to "night vision" mode. Infrared technology all cv Best Portable Monitors ows for clear viewing of baby, even at nightExpandable - You can add up to 3 cameras to this system. Really valuable if you have multiple kids or simply need to monitor multiple rooms.Being first-time parents can be nerve racking. If you are given a choice, I bet you would like to always keep an eye on your baby. However, with the increasing demands of our lifestyle, that is next to impossible.