| EX-31A | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR THROUGH-BEAM 500MM NPN | 
                                    
                                                                    
                                        | EX-31A-C5 | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR THROUGH-BEAM 500MM NPN | 
                                    
                                                                    
                                        | EX-31A-PN | 
                                        Panasonic | 
                                        18 | 
                                        SENSOR THROUGH-BEAM 500MM PNP | 
                                    
                                                                    
                                        | EX-31B | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR THROUGH-BEAM 500MM NPN | 
                                    
                                                                    
                                        | EX-31B-C5 | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR THROUGH-BEAM 500MM NPN | 
                                    
                                                                    
                                        | EX-31B-PN | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR THROUGH-BEAM 500MM PNP | 
                                    
                                                                    
                                        | EX-32A | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR REFLECTIVE 50MM NPN LT ON | 
                                    
                                                                    
                                        | EX-32A-PN | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR REFLECTIVE 50MM PNP | 
                                    
                                                                    
                                        | EX-32B | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR REFLECTIVE 50MM NPN | 
                                    
                                                                    
                                        | EX-32B-C5 | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR REFLECTIVE 50MM NPN | 
                                    
                                                                    
                                        | EX-32B-PN | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR REFLECTIVE 50MM PNP | 
                                    
                                                                    
                                        | EX-33 | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR THROUGH-BEAM 800MM NPN | 
                                    
                                                                    
                                        | EX-33-PN | 
                                        Panasonic | 
                                        35,000 | 
                                        SENSOR THROUGH-BEAM 800MM PNP | 
                                    
                                                                    
                                        | EX-35-B-1-0-20-M25 | 
                                        Amphenol Industrial | 
                                        35,000 | 
                                        EX 35 GLAND FOR UNARMORED CABL | 
                                    
                                                                    
                                        | EX-35-S-3-1-20-M20 | 
                                        Amphenol Industrial | 
                                        35,000 | 
                                        CABLE GLAND 9.6-14MM M20 S STEEL |