... or infrared optoelectronic interfaces)2,Ultrasonic transducer 10,Locking cover3,Stainless steel cover 11,Parameter labels4,Header ... ,Temperature sensor 14,Obturating ring7,Waterproof circuit board 15,Reflective surface8,Circuit board protective cover 16,Warning signsBeing favored, ... the material testing strictly including 304,316L,special plastic and rubberarticles,ensure that the product long-term ...