4 Channel Relay Module, Industrial Grade Optocoupler Isolation Guide Rail Mount USB TTL Control Relay, USB CDC Class Virtual Serial Port Protocol or UART Protocol
| Country | USA |
| Manufacturer | Metalprint |
| Binding | DVD |
| UnitCount | 1 |
| Format | Closed-captioned |
| UPCs | 604388634729 |
| EANs | 0604388634729 |
| ReleaseDate | 2005-08-23 |