description interconnected wireless smoke alarm with voice location, battery operated the first alert interconnected wireless smoke alarm with voice location features an 85-decibel siren and voice alarm that tells you where the danger is located. a photoelectric sensor detects smoke while minimizing false alarms from cooking or shower steam. interconnected smoke detectors in different locations are designed to work together, with one alarm triggering the other alarm during a fire, helping to provide the earliest warning for your family. california proposition 65 warning. features interconnected alarms all sound when one is activated, increasing safety voice alarm tells you where the danger is, so you can choose the best evacuation route battery-operated alarm easily installs photoelectric sensor reduces false alarms specifications acme tools brand name first alert acme tools part number 1039826 assembled weight (lbs) 1.58 california proposition 65 warning required yes country of origin mexico globaltradeitemnumber (gtin) 00029054018946 package contents (1) alarm, installation hardware, owner's manual and battery package depth 2 package height 5 package weight 3.5 package weight (lbs) 3.5 upc 029054018946