1969
Temperature Electronics Ltd (TEL) is established
1989
Graham Eady became the owner
Early 1990s
TEL produced its first Airflow Monitors and Controllers
1992
First started exporting outside the UK
1999
TEL produced its first Airflow Monitors and Controllers
2002
Eady brothers, Richard and Andy join TEL
2003
Released the AFA1000 range of Airflow Monitors and Controllers
2009
Released AFA3000 and gained a partner in China
2011
Moved to bigger premises in Glossop, Derbyshire
2013
Released LEV Monitor
2015
Graham Eady retired
2016
TEL launched TEL-Americas
2016
Released Volumetric Monitor/Controller
2017
Released AFA4000 and AFA5000
2019
CAV and VAV Terminals are released
2020
Released upgraded AFA4000 & AFA5000
