| 
                    
                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 128PPR  | 
                Obsolete | Optical | Tachometer | 128 | 5V | 2mm Open Center | No | No | Chassis Mount, Motors | Vertical | Terminal Pins | - |             
                    
                | 
                    
                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 256PPR  | 
                Obsolete | Optical | Tachometer | 256 | 5V | 2mm Open Center | No | No | Chassis Mount, Motors | Vertical | Terminal Pins | - |             
                    
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                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 128PPR  | 
                Obsolete | Optical | Tachometer | 128 | 5V | 1/4" Dia Flatted End | No | No | Panel Mount | Vertical | Terminal Pins | - |             
                    
                | 
                    
                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 256PPR  | 
                Obsolete | Optical | Tachometer | 256 | 5V | 1/4" Dia Flatted End | No | No | Panel Mount | Vertical | Terminal Pins | - |             
                    
                | 
                    
                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 128PPR  | 
                Obsolete | Optical | Quadrature (Incremental) | 128 | 5V | 2mm Open Center | No | No | Chassis Mount, Motors | Vertical | Terminal Pins | - |             
                    
                | 
                    
                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 256PPR  | 
                Obsolete | Optical | Quadrature (Incremental) | 256 | 5V | 2mm Open Center | No | No | Chassis Mount, Motors | Vertical | Terminal Pins | - |             
                    
                | 
                    
                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 128PPR  | 
                Obsolete | Optical | Quadrature (Incremental) | 128 | 5V | 1/4" Dia Flatted End | No | No | Panel Mount | Vertical | Terminal Pins | - |             
                    
                | 
                    
                 | 
                
                TT Electronics/Optek Technology | 
                ROTARY ENCODER OPTICAL 256PPR  | 
                Obsolete | Optical | Quadrature (Incremental) | 256 | 5V | 1/4" Dia Flatted End | No | No | Panel Mount | Vertical | Terminal Pins | - |