Detailed Answer
CRC (Cyclic Redundancy Check): the sender computes a checksum for the data and appends it to the frame tail; the receiver recomputes and compares, discarding the frame if they don't match (retransmission or ignore). CRC detects over 99.99% of transmission errors and is key to guaranteeing command correctness in industrial remote controls. Every frame of the LDER LD series contains a CRC check, combined with rolling codes for highly reliable communication.
| Principle | Appended checksum |
| Detection rate | >99.99% |
| LDER | CRC on every frame |
Note:CRC ensures commands cannot be tampered with — it's the foundation of secure communication.