Here is an over-the-door smart security camera that combines with Alexa to let you see, hear, and talk to visitors. DoorCam 2 has 1080p HD video, 160-degree wide angle view, motion sensing, and two way audio. It also has 3-day rolling cloud storage available for free.
This smart security camera has customizable motion zones and adjustable sensitivity. It has a weather resistant design and can be powered by 3 x D batteries. This camera works with Alexa, Google Assistant and IFTTT.