Detailed Answer
Opto-isolation uses optocouplers to transfer signals while providing electrical isolation: no electrical connection between input and output sides, preventing interference, surges, and ground potential differences from damaging circuits. Industrial remote receivers use opto-isolated relay outputs to protect the internal decoding circuit. The Leader LD series has fully isolated input/output design with strong anti-interference capability.
| Principle | Optocoupler isolation |
| Function | Anti-interference / anti-damage |
| Leader | Fully isolated |
Note:Control cabinets have strong electrical interference; full isolation design is more reliable.