2. Introduction
This product is a small and low-cost EZ DIY surveillance device to be installed on a 3 ~ 5.3 cm thick door. It is
a versatile device having many advantages in its applications. Many customers found the advantages of this
product including the followings:
1. You can replace the device with your current door viewer (with 1/2” or 12mm hole) without any additional
drilling work on the door.
2. This product has a better viewing angle comparing to a surveillance camera hanging on the ceiling that
can only see people from the top direction. This device is also easier to install comparing to the installation
of a ceiling camera.
3. You can see who is walking / standing in front of your door without going to door to check it out. It is good
for elderly, or handicap people and any person who is normally busy in doing work at home / office.
4. The sensor unit is hiding behind the door viewer so thief / robber will not be able to notice he is already
under your surveillance watching. He will not be able to using any special tools to see your place through
the door viewer either.
5. The device is installed inside the house to avoid direct damage from the outside so it will have a long
operational life-time. It is easy installation and easy to disassemble without damage anything.
6. You may just buy a basic kit now and expand the surveillance setup into various connections in the future,
for example connecting it to TV, DVR, TFT LCD monitor, PC, Notebook and even with a wireless setup in
your house, as shown in the following wiring diagram.
Peephole Viewer Camera Wiring Diagram for Different Applications
