4 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler
| Country | USA |
| Brand | Puzzlewright |
| Manufacturer | Puzzlewright Press |
| Binding | Spiral-bound |
| ItemPartNumber | PUZ-0013E |
| ReleaseDate | 2017-10-03 |
| UnitCount | 1 |
| EANs | 9781454921110 |