The wireless digital doorbell sound is melodious and tuneful, there are three kinds of sounds, and many kinds of bell canto are suitable for all kinds of personages' choosing even more. The appearance is compact and uniquely. The remote control range is 100 meters. By installing it is simple and easy, you can lay it anywhere. Its built-in button battery can be used for one year. It's built-in button battery can spend one year ( 20 Times /1 day), because the product is wireless, so does not influence the environment. The all-weather anti-interference system is designed, 1/100000 of the numbers encrypt the code, remove the neighbor and external world from interfering completely, there is no vexation sounded definitely. We design it at saving electricity module. Box size(cm): 57. 5X53X28. 5; N. W.: 12kg; G. W.: 13kg; QTY/BOX: 48Model: ED458
