Ring Video Doorbell Pro, Works with Alexa

orks with Alexa for voice control (Alexa device sold separately).See, hear and speak to anyone at your door from your smartphone, tablet or PC.Watch over your home in crystal-clear 1080p HD video. Operating Conditions: minus 5 degree Fahrenheit to 120 degree FahrenheitProtect your home??day or night??with infrared night vision.Live View enabled: Check-in on your property at any time with video on demand.Lifetime purchase protection: If your doorbell gets stolen, we??ll replace it, for free