The ADOR has its own built-in sensor. In May 2015, we came out with a new sensor. New ADORs since May 2015 come with the new D-Type sensor built-in and if also was ordered an outside sensor, then the new D-Type sensor would be what you get.
However, if you order an external sensor for an older ADOR with the older electronic board, then you should order the OLD sensor.
Please see this, which illustrates how the sensors compare to their compatible electronic board.
Here is the instruction sheet that comes with the external sensor or with the external connector for the pushbutton.