| Power Source | Battery, Hardwired |
|---|---|
| Battery Included | No |
| Color | White |
| Item Diameter | 5½" |
| MPN | 9120B |
| Item Depth | 2 in |
| Brand | First Alert |
| Type | Smoke Alarm |
| Number of Batteries | 1 |
| Model | 9120B |
| Features | Battery Backup |
| Item Weight | 7 oz |
| Country of Origin | Mexico |
Check the listing for details. First Alert 9120B SMOKE DETECTOR Alarm Hardwired with Battery Backup Ionizing. Color: White, Condition: Used, Made in Mexico. Listed at 18.00 USD. Model 9120B. Hardwired with Battery Backup. Hardwired and uses 9 volt battery backup (battery not included). SMOKE DETECTOR Alarm. First Alert.