Without more info (what is the other module ?? is there a specific part number ?? which interface does it use ?? how have you connected it ?? what sketch are you using ?? what do you expect to happen that isn't ?? what is happening that you don't expect ??), it would be almost impossible for anyone to offer anything more than a guess !! Please provide more details (pictures of your hookups are very helpful), as well as posting your sketch (make sure to use the </> code button to allow someone else to copy your sketch & possibly reproduce the same conditions that you are testing with).
Mark J Culross
KD5RXT