This 21.5-inch industrial control all-in-one machine is an industrial capacitive touch screen wall-mounted stainless steel query and waterproof teaching machine. It adopts industrial capacitive touch screen technology, providing excellent touch response and durability, suitable for various scenarios such as querying and teaching. Moreover, it is fully waterproof, ensuring safe and reliable operation in harsh environments.

The 21.5-inch screen size of this all-in-one machine is suitable for displaying queries and teaching materials. Its wall-mounted design allows for easy installation on the wall, saving space and providing a more convenient user experience.

The industrial capacitive touch screen technology ensures more sensitive and accurate touch operations. Users can interact through touch operations such as tapping, sliding, and zooming. Whether it's finding information in a query system or conducting demonstrations in a teaching environment, tasks can be completed quickly and accurately.

The full waterproof functionality enables this all-in-one machine to work normally in wet and dusty environments. It can resist the intrusion of water, oil, dust, and other external substances, ensuring stable performance and reliable use.

In summary, this 21.5-inch industrial control all-in-one machine is an industrial capacitive touch screen wall-mounted stainless steel query and waterproof teaching machine. It utilizes industrial capacitive touch screen technology, providing excellent touch response and durability. The full waterproof functionality ensures its safe and reliable operation in harsh environments. The wall-mounted design allows for easy installation on the wall. It is a reliable and efficient solution suitable for various scenarios such as querying and teaching.