description ionization smoke alarm - pack of 12 the first alert ionization smoke alarm is an ideal choice for essential smoke detection. this smoke detector uses ionization smoke-sensing technology with an enhanced smoke-gathering design that is great for detecting smoke from flaming fires. convenient single-button operation lets you silence false alarms and test the alarm to ensure it is working. california proposition 65 warning. features smoke alarm excels at detecting smoke from flaming fires ionization smoke-sensing technology with enhanced smoke-gathering design smoke detector features single test/silence button for simple operation side-load battery compartment and theft-prevention lock specifications acme tools brand name first alert acme tools part number 1040964 alcohol prep pads included none assembled weight (lbs) 5.5 california proposition 65 warning required yes country of origin mexico globaltradeitemnumber (gtin) 00029054019493 package contents smoke alarms, batteries, installation hardware and owner's manual package depth 12 package height 5 package weight 7 package weight (lbs) 7 upc 029054019493