I've attached a photo of the four remotes we gathered on a recent trip.

There's discussion here:

http://groups.google.com/group/Neuros-DM320Hardware/browse_frm/thread/92b5adae0f5effd3/ca1b999b38861ec2?q=remote+control&rnum=1#ca1b999b38861ec2

and here

http://groups.google.com/group/Neuros-DM320Hardware/browse_frm/thread/f19809c8c310bb12/149ea35023978fd2?q=remote+control&rnum=2#149ea35023978fd2

and some conclusions here

http://www.theneuros.com/index.php/Recorder_III:functional-spec#Remote_Control

and discussion here

http://www.theneuros.com/index.php/Talk:Recorder_III:functional-spec#Comments_on_Remote_Control

we need to finalize a few things.