- Suitable for extreme heavy duty applications
 - Prevents unauthorised entry to restricted areas
 - Over 8,000 possible combinations
 - Operates by knob from both sides
 - Stainless steel buttons will not indicate usage
 - Passage facility (By code) supplied as standard
 - Mechanical operation - no wiring or batteries required
 - Used widely on Police Stations, Banks, Building Societies & Hospitals
 - Optional key override function available
 
  
                        
                        
                        
                        





