I bought this remote second remote control. Works perfectly with my Hormann ProMatic 2 Engine (the reference is written behind the remote). I have not understood the instructions to learn the remote control code for I APRIS the remote that knew what the new remote knew (ie nothing). Fortunately, the engine operating manual explains how to add remote control with the engine. In extreme cases it is easier to add the remote control with the engine rather than the other remote control.