Simple yet stylish. NuTone wireless pushbuttons allow you to identify one door from another, by setting each button to ring to a different sound. Active transmitter pushbutton and receiver chime “learn” process prevents interference with other wireless products. This pushbutton works with the following NuTone Wireless Door Chime Models: LA223WH, LA224WH, LA224RWH, LA225WH, LA226WH, LA542WH, LA552WH and LA553WH.