60 Ringtones and 5 Volume Levels - Features 60 distinct ringtones with 5 adjustable volume levels from 0dB to 110dB (mute level design, great for home use when the baby is sleeping). The stereo speaker delivers rich and clear sound, allowing you to easily select and set your favorite ringtones as desired. Flashing light indicators are easy for people to notice, including the hearing impaired. Extra Long Range - The range can reach up to 150 meters in an open field, enabling you to hear and respond to the doorbell in time. Whether you're busy a few rooms away or on another floor, in the garden or kitchen, you'll always be easily informed when someone rings from outside, never worry about missing visitors. Robust and Waterproof IP65 Push Button - Modern and elegant design in classic black and white, excellent materials protect it from high temperatures and interference. IP65 waterproof, operates between 14°F and 140°F; withstands various tough weather conditions, acceptable for outdoor use. Easy to Install - Simply plug the mini receiver into an outlet and attach the transmitter to a wall using the double-sided tape, but before attaching the transmitter, remove the battery isolation disc, very easy to install. Does not interfere with other equipment in your home or your neighbors', ensuring you never miss a visitor. This wireless doorbell is by far the most practical choice for your home and business. Long Wireless Range Wireless range signals up to 500 feet/150 meters in open space and does not interfere with other equipment in your home or your neighbors'. You will never miss a visitor. LED Flash When you press the button, the doorbell transmitter and receiver flash simultaneously. Flashing lighting along with audible alert indicators are easy to perceive for people with hearing impairment. Waterproof Push Button The impressive dust and water resistance rating of IP44 water classification and approved operating temperature range from -22℉ to 158℉ make the transmitter button robust enough to withstand almost any outdoor conditions.