Holox

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BT-321

GPS unit: Holox BT-321

  • Website: review with photo
  • receiver (Navigation: )
  • CPU: (OS: ), Flash: (external: )
  • GPS: 32 channels, ( , )
  • Display: 3 leds, Connectivity: bluetooth
  • Internal: Batteries: internal like Nokia
Addresses POIs
Mass Storage mode ? Waterproof


Notes: rebadged BT74R made by the Telemax Technology Corp




BT-541

GPS unit: Holox BT-541

  • receiver (Navigation: )
  • CPU: (OS: ), Flash: (external: )
  • GPS: 54 channels, ( agps, )
  • Display: , Connectivity: bluetooth
  • Internal: motion detector Batteries:
Addresses POIs
Mass Storage mode ? Waterproof


Notes: The Holox BT541 uses the Skytraq Venus 521 chipset which supports AGPS. Skytraq provide a free AGPS download application for Symbian and Windows. Time to lock, and typical accuracy are very good when AGPS is used (can be a bit tempramental without it). Early firmware versions had problems with track drift (firmware is upgradeable, but difficult to find the latest version). The BT541 has a motion detector (sounds like a ball bearing in a box) that allows the device to go into a low power mode when not moving. This can give a battery life of many days depending on usage.