3)The Housing base frame is of stainless steel so as to protect the housing from rusting from the bottom4)Boom: Powder Coated White with re factor strips and LED flashing lights on top5)Boom Length : 2 m to 4.2 m for normal lane / 5 m and 6.5 m for extra wide lane.6)Protection: All housing and internal parts have rust & corrosion free metals / alloys ofhigh strength with suitable epoxy coating as applicable.7)Easy to use external manual unlock device.8)Amperometric anti-crushing control.9)Slowing down setup thanks to two adjustable limit switches.10)Soft start and slowing down functions adjustable in opening and closing.11)4.2 m white painted aluminum arm is provided with two red rubber profiles.12)Flashing lights on the arm ensure barrier visibility especially at night.13)Auto close with timer (1s to 90s)14)Single / 2 Channel loop detector with programmable features (accessory)15)Electronic module which allows the synchronized movement of two Barriers.16)Painted fixed support for bars.17)Stainless steel version available.d ad-free.