... framework of these tripod turnstile series are made of state standard(304) grade stainless steel, and its rustproof, durable, ... : 10C~50C Relative humidity: <90%, never coagulated Full-automatic bridge-type bevel tripod turnstile(YAT6338)1)Being compatible wth serveral ... the controllor, LED figure display function (optional)12)With standard input, output interface, it's best choice of system ...