How to Choose a DVR Security System

Decide if you prefer a standalone unit or a PC-based unit. For instance, a standalone unit consists of a console that you load with a recordable DVD. The system records everything it monitors, and you can keep the DVD for archive footage. A PC-based unit operates via a desktop computer. It comes with software that runs the monitoring system. Standalone units offer more stablity. PC-based units offer ease of use, but they can get infected with a computer virus. PC units do not require additional monitors.

Compare the quality of the camera. Manufacturers rate security camera resolution in TVL (television lines). High-quality cameras produce video from 420 TVL to 570 TVL.

Review the features. DVR security systems come with a variety of features that include outdoor capability, night-time viewing, motion detection, and a wide field of vision. Additional features might include ease-of-installation, zoom, pan and tilt, and 360-degree manual swivel that allows you to point the camera in any direction you want.

Decide if you need a wireless system. Wireless systems provide easier installation and less hassle. They also allow you to put the cameras in places that wires might not reach.

Review the lux specifications. Manufacturers rate light sensitivy in lux; 10 lux equals one foot of illumination provided by one candle. Higher lux values indicate a camera's ability to "see" in low-light settings. Look for a camera that can detect light in darkness of .001 lux.

Compare installation requirements. PC DVR systems involve installing the software onto your computer. Stand-alone units require that you simply hook the cameras to your DVR unit. For both systems, look for easy mounting brackets that install into a wall or ceiling.

Check for upgrade compatibility. PC DVR systems can often accommodate upgrades. For example, a new driver can provide you the capability to record in color. A stand-alone DVR system might record only in black and white. To upgrade to color recording, you would have to purchase a new system. Look for DVR systems that can accept additional cameras, monitors, or color-video upgrades.

Review the warranty. Many DVR systems come with a one-year manufacturer's warranty, but you can purchase additional one-year or two-year warranties. Some systems offer three-year warranties.