Boom Barrier It is a bar or pole pivoted in such a way as to allow the boom to block vehicular access through a controlled point. Boom Gates are typically found at level crossing, parking facilities, checkpoints and entrances to restricted areas. Some boom gates are automatic and powered, some are manually operated, this can be considered as first or initial level of security as boom barrier is used at the gate (entry/exit point) of any commercial and residential erection to prohibit all unwanted entrance. contact us! +91-9310159634 For more info : http://www.indiamart.com/pioneer-system-delhi/search.html?ss=Automatic%20Boom%20Barrier Barrier, Automatic Boom Barrier, Boom Barrier, Automatic Barrier