Channel Visions complete a-bus system for 4 Zones is excellent whole-house music on cat5 wire. The AB-902 enables you to have music in any or every room in your home. Unlike traditional audio distribution methods, which can be expensive and complicated, A-BUS is distributed throughout the home with affordable, easily-accessible Cat. 5 cable. The kit includes: (4) AB-134 keypads (Available in White or Ivory Almond), (1) AB-203, (1) AB-404 and power, (2) IR-3002, (1) A0505, and (1) J-110 Tool. The A0505 remote allows you to easily adjust the volume level on the AB-134 without leaving the comfort of your favorite chair. Once a house is wired for A-BUS, you can choose to have music installed in any room now or in the future.