Extech Instruments, founded in 1971 and headquartered in Nashua, New Hampshire, USA, is a world-renowned manufacturer and supplier of innovative handheld test, measurement, and inspection tools. As a subsidiary of Teledyne FLIR Systems, Extech offers a comprehensive range of 15+ product categories, including electrical testers, environmental meters, mechanical maintenance tools, and thermal imaging cameras. Sold in over 100 countries, Extech's products are trusted by electricians, HVAC technicians, industrial maintenance professionals, and safety inspectors for their accuracy, durability, and cost-effectiveness. The brand's mission is to provide tools that help prevent, identify, and troubleshoot problems across diverse industries, enhancing operational efficiency and workplace safety globally.