TESTO is a world-renowned German manufacturer and a global market leader in the field of portable and stationary measurement technology. Established in 1957, the company specializes in providing highly accurate instruments for a wide array of applications, including HVAC-R (heating, ventilation, air conditioning, and refrigeration), food safety, pharmaceuticals, and emission monitoring. From high-tech thermal imagers and flue gas analyzers to smart digital manifolds and data logging systems, TESTO combines innovative sensor technology with digital connectivity to help professionals optimize energy efficiency, ensure regulatory compliance, and maintain climate control in industrial and commercial environments.