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, ULListed, SIGNED RESELLER AGREEMENT IS REQUIRED TO ORDER.