NVR security camera systems consist of multiple IP cameras and a network video recorder that allows you to monitor various sites simultaneously from your phone or PC 24/7.
Based on the way HD NVR security camera systems transmit data, they can be divided into two groups: wireless NVR security camera systems, where the IP cameras connect to the NVR wirelessly, or PoE systems where they connect via a network cable.
Choosing between NVR PoE security camera systems and their wireless counterparts depends on what you expect from an NVR video security camera system. (For additional details, see our post on the differences between wired and wireless security systems.)
NVR IP security camera systems are classified by the number of channels available. 4-channel, 8-channel, and 16-channel NVR security camera systems are among the most popular models available for purchase at this time.
The number of channels an NVR home security camera system has determines how many cameras you can connect to the surveillance system.
Here’s an example to clarify: even if you only require four cameras now, it is recommended that you purchase an 8-channel or 16-channel NVR security camera system to accommodate potential expansion for future use.
Read also: NVR Security Camera System: What You Want to Know