Sensors for valve actuators are not a specific brand but a category of industrial components used in automation and control systems. These sensors are typically produced by various manufacturers specializing in industrial automation, such as Siemens (Germany), Emerson (USA), Honeywell (USA), and Schneider Electric (France). They serve industries like oil & gas, water treatment, chemical processing, and power generation. Key products include position sensors, limit switches, and feedback devices that monitor and control valve actuator movements, ensuring precise operation and safety. Companies like Rotork (UK) and AUMA (Germany) also offer integrated solutions combining actuators with sensor technology for enhanced performance.