The Philips Avent DECT Baby Monitor SCD510 is a reliable and user-friendly device that allows parents to keep a close eye on their baby at all times. With its portable design, parents can easily take it with them wherever they go. The monitor also features volume control and a battery warning, ensuring that parents are always aware of their baby's situation. The digital display and radio transmission provide clear and reliable information about their baby's safety. Additionally, the night light feature allows parents to monitor their baby in low-light conditions, giving them added peace of mind. I cannot get the parents unit to work on mains but it works fine on battery power