Indicator Description
| Identifer | Color | Status | Status description |
| Input channel indicators Led1~Led8 | Green | Always ON | There is signal input in the module channel |
| OFF | There is no signal input in the module channel or signal input is abnormal | ||
| Output channel indicators Led1~Led8 | Green | Always ON | There is signal output in the module channel |
| OFF | There is no signal output in the module channel or signal output is abnormal |