OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › How do I connect the RF transmitter? › Reply To: How do I connect the RF transmitter? April 18, 2015 at 10:39 am #36843 SeanParticipant No. I have an OSPi Plus version. Attached pictures with file names starting with “IMG_” are pictures I took of the OSPi + board that I have. This is the correct subform and I still need help.