Safe standstill monitoring refers to safety systems used in industrial automation to ensure machinery stops completely before maintenance or access. While not a specific brand, it is a product category offered by companies like SICK AG (Germany) and Pilz GmbH & Co. KG (Germany), specializing in sensors and safety relays for manufacturing, packaging, and robotics. These solutions comply with ISO 13849-1 safety standards, preventing accidental restarts through encoders, light curtains, or torque monitoring.