Exhibit 21.1

Subsidiaries of Sensata Technologies B.V.



|                                                                   |  |  |  |                              
|------------------------------------------------------------------ |  |  |  | -----------------------------
|Name                                                               |  |  |  | Jurisdiction of Incorporation
|                                                                   |  | 
|Sensata Technologies Japan Limited                                 |  |  |  | Japan                        
|                                                                   |  | 
|Sensata Technologies Malaysia Sdn. Bhd.                            |  |  |  | Malaysia                     
|                                                                   |  | 
|Sensata Technologies Holdings Korea Limited                        |  |  |  | Korea                        
|                                                                   |  | 
|Sensata Technologies Korea Limited                                 |  |  |  | Korea                        
|                                                                   |  | 
|Sensata Technologies Holland B.V.                                  |  |  |  | The Netherlands              
|                                                                   |  | 
|Sensata Technologies Holding Company Mexico, B.V.                  |  |  |  | The Netherlands              
|                                                                   |  | 
|Sensata Technologies de México, S. de R.L. de C.V.                 |  |  |  | Mexico                       
|                                                                   |  | 
|Servicios Administrativos Sensata Technologies, S. de R.L. de C.V. |  |  |  | Mexico                       
|                                                                   |  | 
|Sensata Technologies Finance Company LLC                           |  |  |  | United States                
|                                                                   |  | 
|Sensata Technologies Holding Company, US, B.V.                     |  |  |  | The Netherlands              
|                                                                   |  | 
|Sensata Technologies, Inc.                                         |  |  |  | United States                
|                                                                   |  | 
|Sensata Technologies India Private Limited                         |  |  |  | India                        
|                                                                   |  | 
|Sensata Technologies Singapore, Pte. Ltd.                          |  |  |  | Singapore                    
|                                                                   |  | 
|Sensata Technologies Taiwan Co., Ltd.                              |  |  |  | Taiwan                       
|                                                                   |  | 
|Sensata Technologies Hong Kong Limited                             |  |  |  | Hong Kong                    
|                                                                   |  | 
|Sensata Technologies Baoying Co., Ltd.                             |  |  |  | China                        
|                                                                   |  | 
|Sensata Technologies Spain, S.L.                                   |  |  |  | Spain                        
|                                                                   |  | 
|Sensata Technologies France SAS                                    |  |  |  | France                       
|                                                                   |  | 
|Sensata Technologies Germany GmbH                                  |  |  |  | Germany                      
|                                                                   |  | 
|Sensata Technologies Sensores E Controles do Brasil Itda.          |  |  |  | Brazil                       
|                                                                   |  | 
|Sensata Technologies Changzou Co. Ltd.                             |  |  |  | China                        
|                                                                   |  | 
|Sensata Technologies China Co, Ltd.                                |  |  |  | China                        
|                                                                   |  | 
|Sensata Technologies Italia S.p.A.                                 |  |  |  | Italy                        
|                                                                   |  | 
|First Inertia Switch Ltd.                                          |  |  |  | United States                
|                                                                   |  | 
|Control Devices, Inc.                                              |  |  |  | United States                
|                                                                   |  | 
|CDI Netherlands B.V.                                               |  |  |  | The Netherlands              
|                                                                   |  | 
|RDI Management Company, Inc.                                       |  |  |  | United States                
|                                                                   |  | 
|CDI Holding International SAS                                      |  |  |  | France                       
|                                                                   |  | 
|FTCP Holdings Ltd.                                                 |  |  |  | United Kingdom               
|                                                                   |  | 
|Sensata Technologies Limited                                       |  |  |  | United Kingdom               
|                                                                   |  | 
|FTCP Bermuda Ltd.                                                  |  |  |  | Bermuda                      
|                                                                   |  | 
|Sensata Technologies Dominicana, SA                                |  |  |  | Dominican Republic           
|                                                                   |  | 
|Sensata Technologies Dominicana Holdings, SA                       |  |  |  | Dominican Republic           
|                                                                   |  | 
|First Technology (Europe) Limited                                  |  |  |  | United Kingdom               
|                                                                   |  | 
|SMaL Camera Techologies, Inc.                                      |  |  |  | United States                
|                                                                   |  | 
|Sensata Technologies Massachusetts, Inc.                           |  |  |  | United States                



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|                                                |  |  |  |                              
|----------------------------------------------- |  |  |  | -----------------------------
|Name                                            |  |  |  | Jurisdiction of Incorporation
|                                                |  | 
|Sensata Technologies Maryland, Inc.             |  |  |  | United States                
|                                                |  | 
|Airpax de Mexico SA de CV                       |  |  |  | Mexico                       
|                                                |  | 
|Airpax Electronics de Mexico, S. de R. L. de CV |  |  |  | Mexico                       
|                                                |  | 
|Nihon Airpax Company, Ltd.                      |  |  |  | Japan                        
|                                                |  | 
|Airpax Electronics (Shanghai) Company, Ltd.     |  |  |  | China                        
|                                                |  | 
|Airpax U.K., Ltd.                               |  |  |  | United Kingdom