... SS304 stainless steel for the whole case, and adopt anti-damp, dust-proofing, water-proofing international standard design, ... Use SS304 stainless steel for the whole case, and adopt anti-damp, dust-proofing, water-proofing international standard design. ... Infrared photocell (light curtain optional) is used for anti-tail, anti-clamp, alarm and direction judgement function etc. 6. High visibility ...