Hi spycatcher2k,that's right That's what I thought about too ! I do not know why I continued to work using it ! maybe because the seller told me he has the same characteristics ! I mean they have the same pins but in fact they have not the same characteristics ! What a big mistake I made! Now I will buy the right sensor and reconnect it with the arduino and I will return to you if I encountered a problem I wish that you complete with me until the project is finished and I really appreciate your help ''Spycatcher2k'' Thank you so much