It is based in Nashua, New Hampshire with design, manufacturing, and warehousing facilities in Hong Kong and Taiwan and a sales office in Shanghai.

In October 2007, FLIR Systems acquired Extech for $40 million.

[1][2] In December 2009, FLIR Systems sold Extech Data Systems, a division of Extech which made portable printers.

[4] In May 2012, the Extech HDV640W High Definition Wireless Articulating Videoscope received the 2011 Breakthrough Product of the Year award from Processing Magazine.

[5] In July 2018, the company released the Extech UV505 Pocket UV-AB Light Meter.