| Basic order number | Name | Manufacturer |
|---|---|---|
| 6DP9402-0AA00 | Optocoupler relay with socket, without assembly | Siemens |
| 6DP9402-0AA01 | Optocoupler relay with socket andassembly | Siemens |
| 6DP9402-0AB00 | Optocoupler relay | Siemens |
| 6DD1681-0AF4 | SIMADYN D Digital Control System Interface board SB60 | Siemens |