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99/month for 30 days of videoReasons to BuyCan go anywhere, no doorbell requiredHas infrared sensor to distinguish people from carsReasons to AvoidSo so video qualityApp doesn't let you look at camera view anytimeNo chime inside the houseAmong the video doorbells we tested, the RemoBell was the largest and had the lowest resolution, and it does not integrate with any other smart home systems. We'd skip this option. How a Video Doorbell WorksWhen you push the button on a traditional doorbell, the action closes a circuit to ring a chime inside your home. Video doorbells are a bit more complex. When you push the button on one of these devices, the doorbell's camera sends a video feed to your smartphone over Bluetooth or Wi Fi, and you can press a button in the app to talk to the person at the door over a two way speaker. Each doorbell supports ring alerts, which notify your phone when a person rings the bell, as well as motion alerts, which can be a little more hit or miss.