The Byron DBY-22311 Wireless Portable Doorbell Set is a modern, battery-powered doorbell system suitable for home, school, and shop use. It features a sleek oval-shaped design with a 150m wireless range and 16 different melodies to choose from. The set includes a doorbell, bell push, instruction manual, and double-sided tape for easy installation. With adjustable features and a portable design, this white-coloured doorbell is a convenient and stylish addition to any property. Made from durable plastic and powered by lithium batteries, this wireless doorbell offers reliable and versatile security for your home.