Wireless Doorbell with 32 Melodies & LED Flashing Light 32 different melodic sounds for selection; Plays ding dong chime; Wireless transmission to master unit; No wiring or drilling Easy installation; Wireless doorbell can be placed anywhere you want; Hear the door chime in any room; Never miss a visitor or delivery again Useful in home, office, or commercial buildings; LED indicator flashes when bell rings; New technology New sounds; Can be mounted with screw or with double sided self adhesive tape (included)