... be chosen from 3 meters to 6 meters, and barrier gate4. closing time is also arranged from 1 second to 6 ... sensor memory limit) for beam rises and falls.Technical data:1) Beam length: <=6m2) Opening (Closing) time: 1s, 3s, 6s3) Center ... Turnstile,Turnstile Gate,Drom Arm Turnstile,Electric Barrier,Access Gate,Security Gate,Access Control System,RFID,Long Range Reader system,Electric folding Gate, ...