Signal conditioners are not a specific brand but a category of devices used in industrial automation and process control. These devices are manufactured by various companies worldwide, such as Omega Engineering (USA), Weidmüller (Germany), and Phoenix Contact (Germany). Signal conditioners serve industries like manufacturing, oil & gas, and aerospace by amplifying, filtering, or converting analog signals (e.g., temperature, pressure) into standardized outputs (e.g., 4-20mA, 0-10V). Key products include isolators, converters, and transmitters, ensuring accurate signal transmission in harsh environments. Brands like Pepperl+Fuchs and Siemens also offer high-quality signal conditioning solutions.