Here is another smart video doorbell system that serves as a security solution to residential and business property owners. The Hikvision Smart Video Door Phone System comes with an indoor monitor with a 3.5″ screen, a HD camera and an elegant outdoor panel. With wireless PIR motion detector, smoke detector, door/window detector, and other sensors, you can build a complete home security system.
The 4200 video intercom management platform enables you to manage your entire system from one place.
More info is available here.