First Alert Battery Powered Z-Wave Smoke Detector & Carbon Monoxide Alarm, Works with Ring Alarm Base Station, 2nd Generation

The front cover design of the alarm may vary but product function remains the same
This device is certified to work with Ring; Requires Ring Alarm Base Station to Work with Ring. Enjoy improved compatibility, easier setup and a seamless in-app experience.Temperature Range: 40°F (4°C) to 100°F (38°C). Humidity Range: 10% to 95% relative humidity (RH)
Receive real-time notifications in the Ring App when smoke or carbon monoxide is detected. Do not insert the batteries into your First Alert alarm until prompted by the Ring app
Certified to work with smart home systems such as Ring Alarm Base Station, Samsung SmartThings, and Nexia Home Intelligence when connected to a Z-Wave Plus gateway hub (sold separately; Not compatible with Wink or Onelink)
Help keep your family safe with this battery-powered smoke detector and carbon monoxide alarm; includes 2 AA batteries
The Z-Wave Plus with Smart Start feature allows a faster and more intuitive connection of device to hub and on-boarding via QR code scan located on device
Photoelectric smoke sensor helps reduce false alarms caused by cooking or shower steam
Includes an 85-decibel horn, single test/silence button, side access to a tamper-resistant battery door, and pins that lock the alarm to the mounting bracket