... sensitive 3.Color flash light & alarm is available 4.Unique barrier boom PCB40 boom is 4.0M speed 2.5S, PCB60 ... detector (optional)Reliability, Highly sensitive, Anti-disturbed, Safety.(Unique Barrier boom)Unique barrier boom with rubber which can be avoid damage, color ... /roundOpening time:2.5s 5.0sMotor Controller:MLC100/300 Automatic Barrier PCB40/60