Tracer offers you 1 Session of Data capture and 4 fileds of Data collection in that Session. Tracer offers 1 way transfer from the PDA to the PC as 1 file format. TracerPlus offers you 32 Sessions of data capture with 10-30 Fields of data collection per Session. TracerPlus allows two way transfers from PC to PDA and PDA to PC. TracerPlus data files can be transfered to the PC in 6 different file formats. | 
