ACTIA FirsTach 028 electronic automotive tachographs ( round shape equivalent to Kienzle 1318 ) are designed for installation in automotive vehicles ( Vans, Trucks and Buses all makes: DAF, Volvo, Mercedes, IVECO, Renault, Kamaz, MAZ, etc.. ) whose electric system is of 24V nominal voltage. The instruments indicate and record momentary speed of a vehicle, the distance traveled and driver's activities. Basic technical data: 1. Measuring and recording speed scale (25 to 125) km/h 2. Measuring speed scale unit value 10 km/h 3. Distance counter measuring scale (0.1 to 999999.9) km 4. Maximum recording time 24 h 5. Constant k measuring scale (4000 to 36441) imp/km. 6. Nominal operating voltage 24V 7. Supply voltage (20 to 30) V 8. Tachograph designed for One driver Two drivers 9. Driving time Automatic 10. Working temperature range ( -40 to +90) C If you are interested pls. contact me directly:, so will be glad to answer to all your questions. Best regards, Pawel Budziszewski