Diagnostic Tester DT-4

Off-HighwayCommercial VehiclesAutomotive

The modular Vehicle Communication Interface (VCI) with integrated diagnostic function.

The DT-4 is a diagnostic tester with a wide range of possible applications. It can be used in all phases of the vehicle life cycle, from the development phase to the end-of-line test area in production and on to after-sales customer service.

With its compact design and the focus on the relevant diagnostic functions, the DT-4 tester is particularly effective for test and commissioning tasks with little worker interaction as well as for completely automatically executable test sequences.

Thanks to the modular design, customers can choose from various customised versions.

Commercial Vehicles

The small size makes it a perfect device for maintaining vehicles in the field.

Ideal for commercial vehicles owing to the support of all relevant diagnostic interfaces and their flexible connection to the OBD port.

Its compact size and the Wi-Fi access make the device ideal for mobile diagnostics using a stable connection to the diagnostic portal.


  • Handy device with low weight
  • Easy handling with ergonomic design
  • Portable useage
  • Ideal for specific test environments
  • Multiplexer modules for customised OBD assignments and cable recognition    Autonomous operation with integrated rechargeable battery
  • WiFi6-capable
  • Full integration into the PRODIS tool suite
  • Cost-effective due to customised range of functions


  • WLAN, WiFi6
  • Bluetooth 5.3
  • Ethernet (LAN) via charging station OBD
  • WWAN (optional LTE-Modem Cat. 6 with GNSS receiver)
  • USB3
  • VCI     
    • DoIP option 1&2 (ISO 13400, auto select) incl. Activation Line
    • 2 x CAN-FD (ISO 11898-2), optional 4 x CAN-FD, 1 x CAN-LS (ISO 11898-3)
    • ADU (12bit) für Diagnoseleitungen und Bordnetzspannung
    • optional Single Pair Ethernet (SPE, 100 Mbit/s bzw. 1 Gbit/s)

Additional Features

IT security:
Secure boot, signed firmware, data carrier encryption

Several status LEDs (some controllable via application) in keyboard foil, 5" TFT, for aftersales applications alternatively status display (ePaper)

Additional functions:
RTC, optional 3-axis acceleration and rotation rate sensor

Sven Lüttwitz

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Sven Lüttwitz
+49 (0) 2408 9492-0

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