304 Stainless Steel Door Barrier Runs stable, little noise and no mechanical impact Pole length: less than 600mm RS485 connec Feathures:304 stainless steel material enable the turnstile rustproof, durable and external destroy resistant. The turnstile runs stable, little noise and no mechanical impactThis tripod turnstile is compatible with several control devices such as IC,ID, magcard, bar code ...