The BB-2 from Interlogix is a Barrier Bar Mercury Tilt Switch Fits Windows 12-inch to 40-inch. Barrier bars safeguard hard-to-protect windows. Basement windows, jalousies, air-conditioning ducts or attic vents... preventing unauthorized entry into these kinds of perimeter openings has always been a tough challenge. Not for our Barrier Bars – they're made for securing hard-to-protect perimeter openings. The unique design of Barrier Bars protects a building in two ways. First, their sturdy appearance deters unauthorized entry. Second, any attempt to remove the bar triggers an alarm. This combination of visual deterrent and alarm system effectively discourages would-be intruders from unauthorized access to a building anytime, day or night.
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