Honeywell Portable Wireless Chime and Push Button: * Ready and easy to use right out of the package * Just add batteries and you are on your way to enjoying this door chime * Completely portable, the contemporary design fits neatly into an office, kitchen, media room, deck or anywhere you choose * Change to any of the 4 tunes * Adjust the volume or the operation modes quickly and easily from the base of the unit * CD-quality sound and a 150" operating range combined with low battery indicators for both the chime and the push button * A great value with super features * Self-learning memory system built into this chime eliminates the hassle of setting codes by automatically adjusting the frequency codes used by the chime and the push button to avoid interference with any other wireless devices within operating range * Up to 4 push buttons can be programmed to work with this chime for multiple entrance notification