Functional prototype is a physical model used to verify and test the function, performance and actual use of the product during product development. Unlike appearance prototypes and structural prototypes, functional prototypes focus on the operability and performance of the product and are usually used to simulate the performance of the final product in a real environment. The following is a detailed description of the main features and application areas of functional prototypes.

Main Features
Functional Verification: Mainly used to test whether the function of the product meets the design requirements, including electrical, mechanical and fluid aspects.
Interactivity: Functional prototypes are usually designed to be operable and can simulate the interaction between users and products.
Material Diversity: Different materials such as plastics, metals, electronic components, etc. can be used according to functional requirements.

Application Areas
Consumer Electronics: Verify the function, user interface and interaction design of electronic products.
Mechanical Equipment: Test the movement and function of mechanical devices to ensure their normal operation.
Automotive Industry: Verify the performance and interaction of automotive systems (such as sensors, control systems).
Medical Devices: Evaluate the operability and user experience of medical devices.
Summary
Functional prototypes play a key role in the product development process and can effectively verify the feasibility and actual performance of the design. By properly selecting materials and processing methods, high-quality functional prototypes can be produced to ensure that the final product can meet market demand and user expectations.