An automatic gate barrier system is a suite of hydraulic/electromechanical devices to control vehicle access in and out of premises. This security appliance control vehicle traffic to and from restricted or private areas. The main components are 1. Gate Barrier Operator 2. Poll/Beam 3. Access Control. Major gate barrier manufacturers support poll/beam length from 2 meters to 6 meters. Learn more https://stebilex.com/your-guide-to-buying-a-gate-barrier/