Swann Doorphone 870 Video Intercom
This easy-install system is the type of video intercom you're probably familiar with, and probably only makes sense for businesses, or older folk uncomfortable with rapidly changing modern tech. It enables the same full-color video and 2-way audio as both the Doorbot and iDoorCam when activated, and the camera's even equipped with nightvision. Plus, the outdoor camera/button element is directly wired to the screen inside, so it'll be unaffected if you're WiFi's down or weak.
Drawbacks: Many. Obviously, it's lack of WiFi means you're only able to check who's outside if you're inside near the LCD terminal. And each component must be wired to one another using the included 50ft cable, which could get complicated if you live on a higher floor.
So, now that you know the choices, it's your call. Need a rig that let's you talk to people knocking on your door from half a world away? A secure video intercom with nightvision? Or would you rather pass on these initial market entries for something a little more advanced down the road, say, one that looks old-school, but also scolds and tasers suspected ding dong ditchers? You know someone's designing that.