Hello, many people forget to press the switch of the rice cooker (keep warm state) when cooking. I designed a rice cooker that can alarm when the rice is cooked and when they forget to press the switc

Suggestion: First learn about the relevant information about the rice cooker alarm device. You can check the relevant information on the National Intellectual Property Patent Network of the People's Republic of China to see if anyone has applied for a patent before proceeding. Relevant application procedures, otherwise it will be in vain

Also: consider the possible costs of the application process and make relevant preparations