| 1990 | April | Establishes Transtron Inc. (April 2), starts business (April 21) |
| 1991 | November | Obtains certification as a direct supplier from Isuzu Motors Limited |
| 1992 | June | Starts production of control units for hill start assist (HSA) systems |
| August | Starts production of control units for diesel engine start assist systems | |
| September | Starts production of control units for exhaust gas recirculation (EGR) systems | |
| 1994 | August | Reaches 1 million units produced of electronic devices for automotive control |
| 1995 | March | Starts production of integrated control units for the Elf light truck |
| 1996 | August | Starts production of the MBC in-vehicle station |
| September | Starts production of auto-clutch systems | |
| 1998 | September | Starts joint development of engine control units with Isuzu Motors Limite |
| November | Obtains ISO 9001 certification | |
| 2000 | January | Obtains type approval for the digital tachograph in the MBCD in-vehicle station |
| March | Obtains ISO 14001 certification | |
| May | Reaches 5 million units produced of electronic devices for automotive control | |
| November | Starts production of engine control units for the Elf light truck | |
| 2002 | February | Starts production of the MBC 2002 in-vehicle station |
| April | Assumes sole responsibility as the commercial vehicle in-vehicle device business of the Fujitsu brand | |
| May | Starts production of engine control units for common rail systems | |
| July | Obtains ISO 9001:2000 certification | |
| 2003 | May | Starts production of data loggers |
| August | Launches in-vehicle fleet management and monitoring package software in the market | |
| 2004 | January | Secures an in-vehicle deal for 10,000 vehicles with Nippon Express involving ASP data service |
| February | Starts production of communication devices for Isuzu Motors's MIMAMORIKUN Online Service | |
| September | Moves head office to the Shin-Kawasaki Mitsui Building (Kashimada) | |
| 2006 | January | Obtains ISO/TS 16949 certification |
| August | Establishes Transtron (Thailand) Co., Ltd. | |
| 2007 | May | Starts sales of array microphones |
| 2008 | October | Transtron (Thailand) Co., Ltd. obtains ISO 9001 and ISO/TS 16949 certification |
| December | Achieves CMMI® Version 1.2 Maturity Level 3 | |
| 2009 | August | Moves head office to the NOF Shin-Yokohama Building (Shin-Yokohama) |
| 2010 | September | Starts sales of the DTS-C1 networked in-vehicle station with 3G support |
| 2011 | October | Starts sales of the DTS-C1D model with a built-in video event data recorder (video event data recorder) |
| 2012 | April | Establishes Transtron (Suzhou) Automobile Electronics Technology Inc. |
| April | Starts sales of the Mobile Tracer-G high-cost-performance in-vehicle station for overseas | |
| October | Starts sales of the Mobile Tracer-G2 high-performance in-vehicle station for overseas | |
| 2013 | August | Starts sales of the Mobile Tracer-G2M low-cost in-vehicle station for overseas |
| 2014 | April | Establishes Transtron America, Inc |
| June | Starts sales of the DTS-C1W in-vehicle station for wireless LAN and the DTS-C1DW model with a video event data recorder | |
| November | Starts production of gear position sensors for motorcycles | |
| 2015 | March | Achieves CMMI® Version 1.3 Maturity Level 3 |
| August | Starts sales of the DTS-D1A networked in-vehicle station with LTE support and the DTS-D1D model with a video event data recorder | |
| 2022 | March | Fujisawa Office is closed and integrated to head office |
| April | Establishes Nago office in Okinawa prefecture | |
| May | Establishes Sensing Solution Laboratory |