120V (volt) AC (alternating current) wired-in smoke alarm with 9V battery back-up. Ionization sensor detects fast flaming fires. Battery compartment swings out, making battery installation easier and faster. Universal mounting bracket centers on any size electrical box up to 4 In. octagonal. Locking feature deters removal of battery. Battery life varies according to use and application. Silence button quiets alarm while occupants respond. Limited 10-year warranty. UL (Underwriter's Laboratories) listed.

• Hardwired 120V Voltage
• Ionization Sensor Type
• Dimensions: 5.6 In. W. x 2 In.H. x 5.6 In. L.
• Battery Back-up
• 85dB Decibel Level
• 9V Battery Type
• Batteries Included