The manufacturer send me the wrong device!!!!! And he wants that I send it back. But its much more expensive for ma to send it back!!! You can see on the picture that the motor don't have the green board above!!!!!!! So please send me again the right device and I will close the dispute. By the way, my last order was canceled I never received the parcel!!!! Its a pity with my orders..... I will not continue to buy items with you if I am not satisfied by the conclusion of this problem!!!! Best regards Thierry