Nobeltec VDR Module Digital Download [VDR]VDR Module Digital Download Data recording made simple. Save your data from previous trips up to one month. The Voyage Data Recorder Module, which comes as an option, offers the possibility to save all the information received from the connected sensors to TZ Professional (GPS, radar, and AIS ARPA). It is particularly useful in the case of an incident as it allows one to look back at all the available information relative to the surrounding