Dear Client, I can help you with your project of controlling 10 12V relays using a mobile number in SMS. I propose designing a microcontroller-based system using Arduino or similar boards, along with a GSM module. The system will be able to receive SMS messages from a mobile phone and control the relays accordingly. I can also integrate additional features such as status reporting and security measures to ensure the system's reliability and safety. Please provide me with more details on your requirements, and I will be happy to discuss further.