There are 60 different ringtones, 5 adjustable volume levels from 0dB to 110dB (silent level design, suitable for use at home when the baby is sleeping). The stereo speakers provide rich and clear sound, and you can easily select and set your favorite ringtone. The flashing indicator light is easily noticed by people, including the hearing-impaired.In open areas, the range is up to 150 meters, allowing you to hear and answer the doorbell in time. Whether you are several rooms away or on another floor, busy in the garden or kitchen, you can always easily receive a notification when someone calls from outside, and never worry about missing a visitor.Classic black and white modern and stylish design, high-quality materials protect against high temperatures and interference. IP44 waterproof, operates between 14F to 140F; withstands all kinds of harsh weather conditions, suitable for outdoor use.With classic black and white color matching, the design is stylish and modern, and the high-quality materials effectively prevent damage. Simply plug the mini receiver into the socket and fix the transmitter to the wall with double-sided tape. Before installing the transmitter, please tear off the battery insulation sheet first. The installation process is very simple.It will not interfere with other devices in your home or your neighbors, ensuring you never miss any visitors. This wireless doorbell is by far the most convenient choice for your home and business.