The Alecto DBX-57 is fitted with DECT technology, so it's 100% interference free. You can adjust the volume (5 settings) yourself. The Alecto DBX-57 is also fitted with LED lights, so you'll not only hear when the baby makes a noise, you'll also see the lights move. The compact size is easy to use and place in the rooms. You don't need to stay by the baby monitor to keep an eye on your baby. The included carrying strap lets you carry the parent unit with you. You'll receive a warning if the distance between you and the baby monitor becomes too large, when the monitor exceeds its maximum range of 200 meters outdoors, and 50 meters indoors.