The Eaton Scan Tool Family from Matco has expanded by offering the HNMD235HD, HNMD232HD and HNMD200HD service tools to, according to the company, quickly diagnose and correct heavy duty truck electronic/electrical problems and is the most affordable and complete hand-held diagnostic tool on the market today. Known as "Four Functions in One," this family of diagnostic tools includes a scanner, comm. Box, data logger and data link tester. There are no cartridges to find or replace and the devices are portable and self-powered. Data is also easily transferable to a PC for analysis with new functions being downloadable over the internet.