Detailed Answer
SIL (Safety Integrity Level) is defined by IEC 61508 and has four levels, SIL1 to SIL4 (level 4 is the highest). Safety-related functions of industrial remote controls (emergency stop, loss-of-signal protection) usually require SIL1 to SIL3. The safety functions of the LIDER LD series comply with EN ISO 13849; high-end XINGJIA models meet SIL2. When purchasing safety-critical equipment, confirm that the product's safety level certification matches the requirements of your risk assessment.
| Levels | SIL1~SIL4 |
| Remote controls | SIL1~SIL3 |
| Standard | IEC 61508 |
Note:Higher safety levels cost more; choose based on your risk assessment.