This kit enables lap timing capbility on the standard Solo DVR unit. It includes an infra-red receiver, which is compatible with beacons from Aim, Alfano, XT Racing and others. It plugs directly into the DVR and will allow you to log lap times on the memory card, or you can also display the information on-screen, over the recorded video. Also included is a convenient wireless remote controller, which can send signals to the receiver and allows you to control the DVR and change the parameters using a TV or monitor and the A/V cable from the DVR.