The wireless doorbell allows a simple installation avoiding the wiring and works for its installation. It consists of a switch suitable for installation in the outdoor and a doorbell with 48 selectable melodies. You can also adjust the ringer volume. The wireless range is 280 meters in open spaces. The bell is connected directly to a plug and the switch is powered by a 12V battery already included. Screws and lugs are included for the surface switch installation.