This DVR has a maximum 64 channels which makes it the best preferred choice in large business premises. Each and every channel is alarm enabled hence making it easy for you to know the origin of the alarm in case of any intruder.
The 64 channel are high definition network cameras which can easily be adjusted to suit any form of light be it daytime or night time. The cameras also have the capabilities of recording speeds of up to 400MBPS.
More at SRN-4000