The RoadRelay is the best-selling on-board computer for the trucking and recreational vehicle markets, with over 100,000 units sold.  The RoadRelay 4 is the next generation product.  Available since 1998, the RoadRelay 4 provides significant value and capability to any electronic diesel engine owner.

The RoadRelay 4 is a driver's display, providing data logging and vehicle monitoring focusing on fuel economy, safety and maintenance, while helping the driver drive better.  Fleet reporting software - INFORM - is available to help fleet managers better understand what is happening in their trucks. The RoadRelay 4 works on any SAE-compliant electronic engine, regardless of manufacturer.

RoadRelay 4.0 Flyer, 3606295
RoadRelay 4.0 Flyer - French, 4103700
RoadRelay 4 for Motorhome Owners Flyer, 4103801
RoadRelay^TM, INRANGE^TM, INLINE^TM, INSITE^TM and QUICKCHECK^TM Worldwide - Warranty, 3381347

RoadRelay 4 website