Safety of machinery. Electro-sensitive protective equipment. Particular requirements for active opto-electronic protective devices responsive to diffuse reflection (AOPDDR) Equipment safety, Safety devices, Control systems, Control equipment, Control devices, Electrical protection equipment, Occupational safety, Safety measures, Electrical equipment, Optoelectronic devices, Electronic equipment & components, Electrical safety, Diffuse reflection, Reflection, Design, Performance, Performance testing, Environmental testing, Marking, Documents