## Common ground
All options describe remote-controlled devices used to handle or manipulate objects, often in hazardous or hard-to-reach environments.
## Options at a glance
**8428.90 – Lifting & handling focus**
- **Defining trait:** Designed primarily for lifting, moving, or transferring materials, goods, or loads.
- **Typical examples:** Industrial crane arms, material-handling robotic arms in factories.
- **Best fit when:** The main purpose is physical transport or positioning of bulk or heavy items.
**8479.89 – Critical area operations**
- **Defining trait:** Built for use in high-risk or inaccessible environments (e.g., underwater, nuclear, combat zones).
- **Typical examples:** Subsea ROVs for pipeline repair, bomb disposal robots used by military units.
- **Best fit when:** The device operates in extreme or dangerous conditions requiring remote control.
**8543.70 – Programmable automation**
- **Defining trait:** Features programmable logic or autonomous behavior beyond simple remote control.
- **Typical examples:** AI-assisted robotic arms for repetitive tasks, self-guided manipulators with pre-set routines.
- **Best fit when:** The device can execute complex sequences without constant human input.
## Key differences
| Feature | 8428.90 | 8479.89 | 8543.70 |
|-----------------------|---------------------|----------------------|------------------------|
| Primary function | Material handling | Hazardous environment use | Programmable automation |
| Control level | Manual remote | Remote, often complex | Semi-autonomous |
| Environment | General industrial | Critical/remote | Repeated task execution |
## How to choose
- Does it primarily lift or move materials? → 8428.90
- Is it used in dangerous or inaccessible areas (e.g., underwater, war zones)? → 8479.89
- Can it run pre-programmed tasks without constant input? → 8543.70
## Overlaps & pitfalls
A device may fit multiple categories—e.g., a subsea manipulator (8479.89) that is also programmable (8543.70). In such cases, prioritize the **main function**: if it's for lifting heavy loads in a mine, use 8428.90; if it’s for bomb disposal, use 8479.89; if it runs automated sequences, use 8543.70. No single trait is inherently dominant—choose based on the product’s primary purpose