HAICOM HI-602DT is a very small sized (43x69x18mm) GPS/DTMF/GSM tracker. The tracker contains a GPS module, GSM module, GPS antenna, GSM antenna and a re-chargeable battery. It is an independent device similar to a regular mobile phone and completely self-contained.

HI-602DT uses the most unique DTMF technology via GSM voice channel to send back the real time GPS location data directly to another phone. The user can track any moving object live on the map without Internet access and a call center in between (Tracking is free of charge with no need to pay any monthly subscription to a service). Unlike a traditional SMS tracker that only sends an SMS with a GPS position to the cell phone and user has to manually key in the location digit by digit to get only a dot on a map, HI-602 continuously sends back real time location data. This facilitates route tracking on local GPS or Google maps. You can actually watch the vehicle movements live on a map similar to a car navigation system.