... 4.RS485 connection turnstile Model: BB101-TT105 (Auto Tripod Turnstiles)Model: BB101-TT115 (Semi-Auto Tripod Turnstiles)Dimension: 1200*280*990mm Functions ... power on later, arm will be automatically lift. B. Semi-auto type: If power off, arm will fall automatically while power ... passenger not through within the specific time, system will auto cancel passing right for this time and the limit passing ...