LCN automatic operators are the proven standard in schools and health care facilities for over 20 years. They are easily retrofitted into existing doors and frames, as well as new construction. LCN low energy electrohydraulic and pneumatic automatic operators feature a heavy duty closer with a slow opening function. LCN’s electromechanical automatic operators utilizes a motor gearbox and control box to perform the opening and closing function.

http://us.allegion.com/brands/lcn/Pages/default.aspx