Combi detector Interconnectable Wireless connection 85 dB Maximum range: 15 m Housing material: Plastic Built-in speaker(s) Horn Alarm mute Insect grille AC/DC Lithium Wireless Wi-Fi Bluetooth White Nest ProtectThe smoke alarm that thinks, speaks and alerts your phone.The alarm goes off and your mind starts to race.Wheres the problem? Is it smoke? CO? Burnt toast?Its time to expect more from your smoke alarm.Nest Protect has been redesigned from the inside out. It has a SplitSpectrum Sensor, tests itself automatically and lasts up to a decade. Its also the first home alarm you can hush from your phone without any extra hardware required. And it tells you whats wrong and can even alert your phone.The smoke alarm that other alarms look up to.Its on your ceiling. And on your phone.Sees both fast and slow-burning fires.The foam and particle board in much of todays furniture make fires burn faster. Technology should keep up. The SplitSpectrum Sensor uses two wavelengths of light to