Smoke And Carbon Monoxide Alarm, Volts:120, Speaks Up To Tell You What'S Wrong And Where The Problem Is. Sends Alerts To Your Phone In Case You Aren'T Home. App Silence Lets You Quiet The Alarm From Your Phone. The Split-Second Sensor Detects Fast And Slow Burning Fires. Weight 1 Lbs 10.4 Oz., In Mfg Box, Made In China. Expiration Date: 5/11/26