Review on Wireless Doorbell - PHYSEN Waterproof Chimes For Home, 1300-Ft Range, 58 Melodies & 5 Volume Levels + LED Strobe (1 Button + 1 Receiver) by Justin Ewing

Overall this item is well worth the money. Installation is a breeze considering you only need to decide which outlets and which rooms you want the chime boxes in. You only need a Phillips screwdriver to attach the ringer buttons. There is even a strip of two sided tape on the back of each button box to hold it box in place while you install the screw. The chime boxes have a wide range of musical tones to choose from. You can set all of the chime boxes to the same tone for both ringer buttons, or do what we did. We used two separate tones, one for the front door button and one for the side, so that we know which door to go to. There are very easy instructions how to do this.