|  | 
                     
                      | Manufacturer Model |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | Recommended Replacement
 | 
                     
                      
                    
                     
                      | 102 | X |  | X |  |  | X |  |  |  | X |  | X |  | X | C | 425 Diadem/Tiara CentaurPlus 
                        C21
 ChannelPlus 
                        H21
 | 
                     
                      | 102E |  | X | X |  |  | X |  |  |  | X |  | X |  | X | C | CentaurPlus C21 ChannelPlus 
                        H21
 | 
                     
                      | 102E5 |  | X |  | X |  | X |  |  |  | X |  | X |  | X | C | CentaurPlus C27 ChannelPlus 
                        H27
 | 
                     
                      | 102E7 |  | X |  |  | X | X |  |  |  | X |  | X |  | X | C | 
                     
                      | 103 | X |  | X |  |  | X |  | X |  |  | X |  |  |  | C | 425 Diadem/Tiara CentaurPlus 
                        C21
 ChannelPlus 
                        H21
 | 
                     
                      | 103E |  | X | X |  |  | X |  | X |  |  | X |  |  |  | C | CentaurPlus C11 ChannelPlus H11
 | 
                     
                      | 103E5 |  | X |  | X |  | X |  | X |  |  | X |  |  |  | C | CentaurPlus C17 ChannelPlus 
                        H17
 | 
                     
                      | 103E7 |  | X |  |  | X | X |  | X |  |  | X |  |  |  | C | 
                     
                      | 3001 | X |  | X |  |  | X |  | X |  |  | X |  |  |  | A | 425 Coronet or ChannelPlus 
                        H11
 | 
                     
                      | 3002 | X |  | X |  |  | X |  |  | X |  |  |  | X | X | A | 425 Diadem ChannelPlus 
                        H21
 | 
                     
                      | 3020P | X |  | X |  |  | X |  |  |  | X |  | X |  | X | C |    425 Diadem/TiaraCentaurPlus 
                          C21
 ChannelPlus 
                          H21
 | 
                     
                      | 3033 | X |  | X |  |  | X |  |  | X |  |  |  | X | X | C | 
                     
                      | 3060 | X |  | X |  |  | X |  |  | X |  |  |  | X | X | C | 
                     
                      | 4033 | X |  | X |  |  | X |  |  | X |  |  |  | X | X | C | 
                     
                      | 701 |  | X | X |  |  | X |  |  |  | X |  | X |  | X | C | CentaurPlus C21 ChannelPlus 
                        H21
 | 
                     
                      | 702 |  | X | X |  |  | X |  |  | X |  |  |  | X | X | C | 
                     
                      | 911 |  | X | X |  |  | X |  | X |  |  | X |  |  |  | C | CentaurPlus C11 ChannelPlus H11
 | 
                     
                      | 917 |  | X |  |  | X | X |  | X |  |  | X |  |  |  | C | CentaurPlus C17 ChannelPlus 
                        H17
 | 
                     
                      | 922 |  | X | X |  |  |  | X |  | X |  |  |  | X |  | C | CentaurPlus C21 ChannelPlus 
                        H21
 | 
                     
                      | 971 |  | X |  |  | X | X |  | X |  |  | X |  |  |  | C | CentaurPlus C17 ChannelPlus 
                        H17
 | 
                     
                      | 972 |  | X |  |  | X |  | X |  | X |  |  |  | X |  | C | CentaurPlus C27 ChannelPlus 
                        H27
 | 
                     
                      | CP15 |  | X | X |  |  | X |  |  | X |  |  |  | X | X | A | CentaurPlus C21 | 
                     
                      | CP75 |  | X |  |  | X | X |  |  | X |  |  |  | X | X | A | CentaurPlus C27 | 
                     
                      | FP15 |  | X | X |  |  |  | X |  | X |  |  |  | X |  | A | CentaurPlus C21 | 
                     
                      | FP75 |  | X |  |  | X |  | X |  | X |  |  |  | X |  | A | CentaurPlus C27 | 
                     
                      | MP15 |  | X | X |  |  | X |  |  |  | X |  | X |  | X | A | CentaurPlus C21 | 
                     
                      | MP75 |  | X |  |  | X | X |  |  |  | X |  | X |  | X | A | CentaurPlus C27 | 
                     
                      | SET 
                        1 |  | X | X |  |  | X |  | X |  |  | X |  |  |  | D | ChannelPlus H11 | 
                     
                      | SET 
                        1E |  | X | X |  |  | X |  | X |  |  | X |  |  |  | D | ChannelPlus H11 | 
                     
                      | SET 
                        2 |  | X | X |  |  | X |  |  |  | X |  | X |  | X | D | ChannelPlus H21 | 
                     
                      | SET 
                        2E |  | X | X |  |  | X |  |  |  | X |  | X |  | X | D | ChannelPlus H21 | 
                     
                      | SET 
                        3E |  | X | X |  |  | X |  |  | X |  |  |  | X | X | D | ChannelPlus H21 | 
                     
                      | SET 
                        3M | X |  | X |  |  | X |  |  | X |  |  |  | X | X | D | 425 Diadem/Tiara ChannelPlus H21
 | 
                     
                      | SET 
                        4 |  | X |  | X |  | X |  | X |  |  | X |  |  |  | D | ChannelPlus H17 | 
                     
                      | SET 
                        5 |  | X |  | X |  | X |  |  | X |  |  |  | X | X | D | ChannelPlus H27 | 
                     
                      | TS15 |  | X | X |  |  | X |  | X |  |  | X |  |  |  | B | CentaurPlus C11 | 
                     
                      | TS75 |  | X |  |  | X | X |  | X |  |  | X |  |  |  | B | CentaurPlus C17 | 
                     
                      |  | 
                     
                      | A 
                        = | Direct plug-in 
                        replacement | 
                     
                      | B 
                        = | Direct plug-in 
                        replacement with simple wiring changes | 
                     
                      | C 
                        = | Replace backplate 
                        and Re-wire required | 
                     
                      | D 
                        = | Replace backplate 
                        but terminal connections the same | 
                     
                      |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |