... speed to control the up and down of barrier arm, lowspeed at start ,highspeed for up and down and also lowspeed at the end ... of parking sytem.6. During the process of up and down,the arm can rapidly response to all signals from sensors, remote ... underframe. 8.Standard equipments: aluminium alloy barrier arm, towbar, auto remote controllor, manual botton and so on.9.Applicable to:Luxurious locatios ...