Footswitch is offered as replacement footswitch for the Olympus AS-2000, AS-3000 and AS-4000 series transcription kits. Control playback, fast forward and rewind with taking fingers off the keyboard. The RS-27 does not come with DSS software required to utilize this footswitch. If you need DSS software with footswitch functionality we recommend you purchase the PC transcription kit (AS-2400) or AS-4000 transcription kit. Both kits contain version of the DSS software that has footswitch functionality, the RS-27 footswitch and the E-102 headset. The DSS player pro software included in the AS-4000 kit is geared for someone who needs to track the progress of multiple files or customers such as in an office situation. The software provided in the AS-2400 kit is geared for someone who usually transcribes for one person.