These are the advantages of the Tachograph D400

• No power connection nor battery charging required, the only tester powered by the tachograph itself.
• Compact size, the smallest tachograph tester on the market.
• User friendly, clear 4 lines menus, no training required.
• Automatic tachograph model detection on power on.
• Double accuracy of the W factor measure on track by detecting half pulses.
• The only tester being able to reset the odometer and change the sender type on the VR2400.
• Flash program memory, easy software upgrade using a serial port or USB serial adapter on any PC.