I have a used one that works as I checked it out today. Has the receiver, Timer, and telephone wire that works between them. Does not include transmitter.
The HotLap will work at the TT to give you immediate access to your lap times, but you will still need to rent a transponder for official timing and computer printouts of your lap times.
One other point....the cable is NOT a phone cable. It looks like it, but is different and a phone cable will not work. You can get the right cable in 7 and 10 foot lengths.
Tim Comeau Racing Enterprises, Inc. 944 Spec racing specialist New and used 944 parts source http://www.comeauracing.com PCA since 1985