Digital video baby monitors have become essential accessories to nurseries. This is a new development but Mobi has positioned themselves firmly as category leaders. Being able to check in visually on your baby does provide a significant level of comfort to many parents. The DXR monitor has easy to operate buttons and a user friendly menu. The range on the DXR system is nothing short of remarkable. The system works with up to 4 cameras and can automatically cycle through each camera or you can put the monitor into Quad Mode, where you can see all 4 cameras at once. Some parents said this made them feel like security guards, but it is our kids after all. Other features included two-way audio where you can hear your child but they can hear you too if you so choose.