NOS Unused, Kiddie 120V Wire- In Smoke Alarm. Quick connect 120 volt AC wire harness included. Battery back up included. Smoke alarm features: Test/Reset Button, Loud Alarm, Red LED Indicator, Green LED Indicator, Interconnectable, Battery Back up, Battery Pull Tab, Separate Mounting Plate, Tamper Resist Lock in Feature, Dust Cover, and Quick Connect. See all photographs and details as no returns.