Executive summary about Outdoor Security Camera by Rafael Jomis 
An outdoor security camera is an integral part of a home or office security system.
Image Resolution
The first thing to consider while choosing a security camera is its resolution.
Night Recording
You should check the Lux rating of the various cameras. Lux is the unit used to measure the camera's ability to record images in the dark. If the camera has to be installed somewhere with virtually zero lighting, then you should go for an infrared outdoor security camera.
Wired/Wireless
There are both hard wired and wireless outdoor security cameras. A hard wired system is definitely more reliable and is much longer lasting.
Audio Recording
Actually, a lot of security systems do not have an audio recording facility.
Expandability
Usually, security systems just use a single outdoor security camera as well as a recording device.
