This Byron wireless doorbell set offers a reliable system with an extensive range to be heard throughout your home. The bell and the first chime are battery-powered for quick replacement, while the second chime plugs into a mains socket, perfect for use in an attic or a garden. Both units feature four volume settings, adjustable from 25% to 100%, to suit your space and hearing. The wireless system boasts a 150m range, ensuring a consistent connection. Easy to install with included adhesive and screws, the doorbell also lights up when pressed, confirming activation to visitors. Features include 16 melodies, a wireless range up to 150m, four volume settings, an IP44 rated bell push, and easy installation. The twin pack contains a portable and a plug-in chime. The portable doorbell requires 3x AA batteries (not included).