The DS remote keyboard communicates with the DVR's over the 485-bus giving scope for locating the keyboard up to 1.5KM* (4900ft) from the DVR, ideal for applications where a Gate House or Security Lodge is located a distance from the installed unit. Using the 485-bus also means that multiple keyboards (up to 16** in total) can be connected to the same DVR, supporting multiple Operator Control Stations. This is the starting point for building several DVR's into a single system and offering control from any location. The remote keyboard also introduces PTZ control which again increases the functionality already supported on the DVR. The introduction of the 3-axis joystick means that an Operator can easily control the pan, tilt and zoom functionality with one simple movement and the additional telemetry buttons ensures that any feature supported on the 3rd Party PTZ or dome camera can be accessed and controlled via the DS keyboard. The combination of the DVR and the digital keyboard makes the Dedicated Micros DVR 'system' potential huge!