Nest Protect, 2nd Generation, Smoke Carbon Monixide Alarm, Wired 120V, Dual sensor, Ionization, Photoelectric, Thinks, Speaks, Alerts Your Phone, Speaks To Tell What’s Wrong Where, Sends Alerts To Your Phone In Case You Aren’t Home, Split Spectrum Detects Fast Slow Burning Fires, Can See The Invisible, Poisonous Carbon Monoxide You Can’t, Long Lasting Sensors Keep You Safe Sound For Up To 10 Years, Gives You A Nightly Promise That Batteries, Will Last The Night, UL Listed, SIGNED RESELLER AGREEMENT IS REQUIRED TO ORDER