Power for signal isolators is a product category rather than a specific brand, commonly associated with industrial automation and control systems. These devices are manufactured by various global companies, such as Pepperl+Fuchs (Germany), Phoenix Contact (Germany), and MTL (UK). They serve industries like oil & gas, chemical, and manufacturing by providing electrical isolation, signal conditioning, and noise reduction for reliable data transmission. Key products include DIN-rail mounted isolators, loop-powered isolators, and intrinsically safe isolators.