... heavy duty,steady,durable 3.vehicle access control Traffic barrier Security Access Folding barrier Keywords: Barrier Gate,Intelligent Barrier Gate, ... the position of the beam.Advanced Features:1. Clutch key can be used to open the clutch when power off ... ,Gate Barrier,Arm Gate,Arm Barrier,,Turnstile, Tripod Turnstile,Security Tripod Turnstile,Safety Tripod Turnstile,Access Control Tripod Turnstile,Semi ...