The final type of doorbell camera I’ll discuss is called a two-way audio and video camera. This is ideal for security companies that need to monitor an area twice as large as what a normal doorbell might cover. For this type of system, two cameras are used instead of one.
Using Doorbell Cameras and Smartphone Alerts for
A video doorbell camera is half security camera and half doorbell. Video doorbell cameras
work on the same premise as old-fashioned security cameras, by allowing you instant
access to an on-screen live feed of whoever is ringing the doorbell. However, most modern
candidates for the best video doorbell & Wifi Camera probably fall into the smarter,
more sophisticated video doorbell class. Let’s look at what’s out there.
The first major advantage of most of the video doorbell cameras on the market today is
that they broadcast a digital infrared signal. Infrared light is invisible to the human eye
but makes up nearly eighty percent of the visible spectrum. This light has a range of about
one hundred to five hundred feet, depending upon the quality of the camera’s optics. The
infrared light passes through objects and will “see” them in the near-infrared spectrum.
What it doesn’t see is the infrared rays themselves, but if the object is lit up enough it will
make up part of the visible light spectrum. These high-tech cameras are able to scan
objects more quickly than the human eye can, and they can record motion very effectively.
The recent high-tech doorbell cameras
There’s also a new class of high-tech doorbell cameras called multi-sensor units. They use
multiple image sensors to determine which area of the doorbell has been triggered. Once
the app is installed, these multi-sensor units can be set to trigger various types of alerts
based on different parameters. For example, there can be a simple alert that says the
doorbell has been tripped. Or it could trigger an audio or visual alarm, or even an
Another new class of doorbell cameras is the chime sensor. These cameras have two
primary parts: a chime receiver that connects to the chime tone itself; and a chime tone
amplifier that connects to an external stereo system and speaker. When the alarm is