... interfaces)2,Ultrasonic transducer 10,Locking cover3,Stainless steel cover 11,Parameter labels4,Header casing 12,Photoelectrlc interface5, ... ring7,Waterproof circuit board 15,Reflective surface8,Circuit board protective cover 16,Warning signsBeing favored,as being unique(1) ... long-term,reliable operation(6)The machine wity high protective performance,Protection design in all junctionsurface,applied to ...