First Alert 9120B / SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, 3-Pack
| Country | USA |
| Brand | Dorman |
| Manufacturer | Dorman Products |
| Binding | Automotive |
| ItemPartNumber | 689-110 |
| Model | 689-110 |
| Warranty | Limited Lifetime Warranty |
| ReleaseDate | 2013-01-04 |
| Size | Large |
| UnitCount | 1 |
| UPCs | 019495372615 |
| EANs | 0019495372615 |