Kidde Smart Smoke Detector, Wifi, Alexa Compatible Device, Hardwired, 2 Pack Product Details The Kidde Smart Smoke Detector, WiFi, Alexa Compatible Device, Hardwired with Battery Backup, Voice App Alerts Value Pack, models P4010ACS-WF, uses photoelectric sensor technology to detect visible fire particles, associated with smoldering fires, and alerts you by sounding an 85-decibel alarm with voice alert announcing "Fire! Fire!". The Kidde smart hardwired smoke alarm connects to your home's wiring using standard 120V AC power voltage and provides battery backup in the event of a power failure. The lithium battery backup lasts the 10-year life of the alarm, so you'll have the benefit of never having to replace a battery. Update-to-date, real-time notifications are provided through the Kidde app, so your family friends - even the pet sitter - can monitor your home's air quality received alerts to smoke presence, high humidity levels that can lead to mold, unexpected high or low temperatures, or Total Volatile Organic Compounds (TVOCs). Setup is easy: simply download the Kidde app and scan the QR code at the back of the smoke alarm. You can also use voice commands to check the connection status of carbon monoxide or air quality by pairing it with your Amazon Alexa, Google Home, and select iPhone Android smart devices. The LED ring-light indicator alerts you to the unit's operational status: red = a smoke or fire hazard, amber = operating error, and green = normal operation. The Test-Hush button silences temporary nuisance alarms, tests if the unit is operating properly, and silences a low battery or end-of-life chirp (up to 24 hours at a time for a maximum of 7 days). Install a smoke detector on each level of your home and inside and outside each bedroom. The Kidde smoke detector is capable of hardwired interconnection to other select Kidde alarms for whole-home activation ? when one alarm sounds, they all do**. UL Certified with a 10-year limited warranty (not a battery performance claim). Voice Alarm announces the hazard type when detected: ?Fire!? = smoke or fire or "Replace Alarm" when the unit has come to its end of life span Easy Installation: download the Kidde app scan the QR code on the back of the smoke alarm Compatible with Amazon Alexa, Google Home, iPhone, Android smart devices 85-decibel alarm LED warning indicators alert you to various status: green = normal operation, amber = operating error, and red = smoke, fire or carbon monoxide event WiFi enabled technology allows notifications to be sent to your smartphone (as well as friends family) in the event of a smoke hazard in your home Photoelectric sensor technology detects visible fire particles associated with smoldering fires Test-Hush Button easily tests the working operation of the smoke alarm silences false alarms; the Kidde app can also be used to test the smoke alarm UL Listed with a 10-Year limited manufacturer warranty on the alarm only (not a battery performance claim). Warranty begins when the alarm is powered on. If that date is unknown, it should be assumed that replacement is needed. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.