Check the listing for details. First Alert SMCO100V-AC, Interconnect Hardwire Combination Smoke & Carbon Mon.... Condition: New. Listed at 285.06 USD. First Alert SMCO100V-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup and Voice & Location Alerts, 3-Pack Product Details Size: 3-Pack Style: Precision Detection Brand: FIRST ALERT MPN: SMCO100V-AC UPC: 029054022134 EAN: 0029054022134 Brand: FIRST ALERT Style: Precision Detection Power Source: Battery Powered Color: White Item Weight: 1.92 Pounds Alarm: Voice Sensor Type: Photoelectric Number of Items: 3 Manufacturer: Resideo UPC Brand: FIRST ALERT Style: Precision Detection Power Source: Battery Powered Color: White Item Weight: 1.92 Pounds Alarm: Voice Sensor Type: Photoelectric Number of Items: 3 Manufacturer: Resideo UPC: 029054022134 Item Weight: 1.92 pounds Product Dimensions: 5.1 x 5.1 x 2.4 inches Country of Origin: Mexico Item model number: SMCO100V-AC Batteries: 2 AA batteries required. (included) Size: 3-Pack Pattern: 2nd Generation Item Package Quantity: 1 Included Components: Easy Adapter Plug, AA Batteries Batteries Included?: Yes Batteries Required?: Yes Battery Cell Type: Alkaline Date First Available: September 21, 2023 First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency Voice & location alerts tell you what the danger is and its location to help you escape safely Through early warning interconnect, when one alarm sounds, all compatible alarms* will sound Battery backup provides continuous protection during power outages Provides reliable 2-in-1 protection against both smoke and carbon monoxide Be alerted to the type of danger and its location in your home with the First Alert SMCO100V-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup and Voice & Location Alerts. Easily install using the quick connect plug. Plus interconnect compatible alarms to create a whole home alarm system to help provide an early warning. Also the alarm is also equipped with First Alert's Precision Detection advanced sensing technology and meets new industry standards.