... 304 stainless steel, 3 anti-damp, dust-proofing outdoor optical double flap barrier pedistrain security product flap barrier Power ... temperature minors 30C to 70 C Working environments indoor,outdoor Relative humidity ≤95% coagulation free MCBF 2,500, ... , water-proofing international standard design, suitable for both indoors and outdoors.Flap barrier consists of cabinet,reader module,main control ...