Detailed Answer
Yes. Expansion considerations: 1. Key count reserve (add actions without replacing the unit); 2. Frequency band reserve (multi-device networking); 3. Interface reserve (RS485/CAN for future connectivity); 4. Repeater expansion (for larger areas); 5. Unified model series (common spare parts). LDER LD series / XINGJIA series have good internal compatibility and flexible expansion. Think ahead during selection to avoid double investment.
| Key count | Reserve |
| Interface | RS485 reserve |
| Unified | Same series |
Note:Write expansion needs into the selection requirements document.