External rotary encoders
                        Rotary encoders for external installation onto machines and electric motors feature a high protection rating of up to IP66 and permissible operating temperatures of up to 100°C.
                    

Internal rotary encoders
                        Rotary encoders for internal installation within devices or motor housings are designed for high vibrations and operating temperatures of up to 120 °C. They offer a protection rating of up to IP40.
                    
