... )While arm moving down, If infrared transportation between transmitter and receiver is blocked by human or vehicle, the arm will ... DV 12V/1A8) Wireless remoter(optional): two button remote transmitter, distance>20m9) RS 485 interface: 9600bps, ASCII decimal ... Humidity:10%-95%ApplicationsThis boom barrier provides a scure and convenient solution in shopping center, exhibition center, hospitals, ...