Watch over it all-without leaving your seat-with the SimpliSafe Video Doorbell Pro. Unlike other doorbell cameras, Video Doorbell Pro uses two different sensors - one sensor identifies the heat signature of people, another detects human form. You'll only get alerts for things that count.We custom built how our doorbell uses power, so it can work with almost any type of home or doorbell setup. With a super wide field of view, you can see everything happening out front in the bright light of day or dark of night-in perfectly crisp 1080p HD. Compatible with your SimpliSafe Gen 3 home security system. Place it in the area you want to monitor and'add device' with your SimpliSafe Keypad.