1.No wiring required 2.water proof and easy to fit 3.16 different sounds 4.Freely change to your desired melody 5.Wireless 16 Wireless Cordless Musical Melody Doorbell Door Bell No wiring required, water proof and easy to fitIdeal for the hearing impairedImagine the stunning performance, 16 different kinds of lovely sounds for your choiceFreely change to your desired melody100% brand newColor: ...