Wireless Doorbell has 36 different melodies to choose from. The door bell is easy to install by just plugging it in to a outlet. It has 3 level volume control. This door bell has a led night light function. The max distance is 200 meters. This does not come with the battery’s needed. You can put the receiver to the wall or with a sticky pad that comes with this set. They are made good and work great. I recommend this item. This product was provided at no cost for the purpose of inspection and an unbiased review.
Update: the batteries go dead after a while.