... BarrierDescriptions1) This boom barrier provides open/close time: 0.8 / 1.5 / 2 / 3 / 4 sec. optional2) Straight arm ... (Optional)While arm moving down, If infrared transportation between transmitter and receiver is blocked by human or vehicle, the arm will go ... output, AC220V/0.5A, DV 12V/1A8) Wireless remoter(optional): two button remote transmitter, distance>20m9) RS 485 interface: 9600bps, ASCII ...