NORTON DOOR Controls Showcases Low Energy Operators at ASIS 2012 PHILADELPHIA, PA, September 10, 2012 – Norton Door Controls, (www.nortondoorcontrols.com), the leading manufacturer of commercial door closers and an ASSA ABLOY Group brand, will showcase its family of Low Energy Operator at ASIS 2012. The Low Energy Operator group of products includes: 5600 Series 5700 Series 5900 Series About Norton Door ControlsNORTON has been the leading manufacturer of commercial door closers since the device was invented by the company founder in 1880. NORTON products are used in schools, hospitals and other commercial applications throughout the globe. NORTON offers traditional surface, overhead concealed, security, commercial, architectural and electrified closers. To complement the closers, NORTON also offers a unique range of arms to help provide maximum door and frame protection. Visit www.nortondoorcontrols.com. About ASSA ABLOY ASSA ABLOY is the global leader in door opening solutions, dedicated to satisfying end-user demands for security, safety and convenience.