- Binding : Tools & Home Improvement

- Brand : First Alert

- EAN : 0029054002440

- Feature : Hardwire， interconnected wireless smoke alarm with battery backup / Uses photoelectric sensing technology which is environmentally friendlier / Low battery warning; simple to use silence/test button; pullout battery drawer / Add additional battery operated First Alert ONELINK alarms to expand without wires / 120-volt with 2 AA battery backup

- IsAutographed : 0

- IsMemorabilia : 0

- Label : First Alert

- Manufacturer : First Alert

- Model : SA521CN

- MPN : SA521CN-3ST

- NumberOfItems : 1

- PackageQuantity : 1

- PartNumber : SA521CN-3ST

- ProductGroup : Home Improvement

- ProductTypeName : SECURITY_ELECTRONICS

- Publisher : First Alert

- ReleaseDate : 2007-05-02

- Size : 1 Pack

- Studio : First Alert

- Title : First Alert SA521CN ONELINK Hardwire Wireless Smoke Alarm with Battery Backup

- UPC : 029054002440