"Knox" safety plug in carbon monoxide alarm w/10 year trio alert system

"Knox" safety plug in carbon monoxide alarm with 10 year never replace battery back up trio alert system "Knox" safety plug-in carbon monoxide alarm TRIO warning system-alerts, informs and directs you in an emergency voice alerts -provide detailed instructions and direction intelligent display-clear communicates warning and notification multi language alarm-speaks in English or Spanish at the push of a button 10 year never replaced battery backup last the life of the storm new in box same day next day shipping smoke free free pet-free home size 4" x 4"