A simple cargo elevator is a device used for vertical transportation of goods, with the main features including:

1. Simple structure: The structure of a simple freight elevator is relatively simple, usually consisting of an elevator shaft, elevator doors, elevator platform, and elevator control system.

2. Simple freight elevators have high safety performance and are usually equipped with various safety devices, such as overload protection, speed limit protection, emergency stop buttons, etc., to ensure the safe transportation of goods.

3. Smooth operation: The simple freight elevator runs smoothly, effectively reducing the bumps and vibrations of goods during transportation and protecting them from damage.

4. Low cost: The manufacturing cost of simple freight elevators is relatively low, so they have been widely used in small businesses and individual users.

5. Easy maintenance: The maintenance of simple freight elevators is relatively simple, usually requiring only basic maintenance such as regular cleaning and lubrication, without the need for complex repairs and component replacements.

Overall, a simple freight elevator is an economical and practical equipment for transporting goods, widely used in various commercial and industrial places.