The GNC710X4 is a 4 pack of the additional outdoor bullet security camera suitable for your GNVR86xx, 87xx, 167xx series. This additional camera provides the option to extend your Guardian full HD NVR system out to the full 8 or 16 cameras the NVR's are capable of. The GNVR86xx is a robust 8 channel Full HD NVR system which can be viewed on your smartphone, tablet or through your television. This integrated system offers exceptional Full HD resolution and quality enhancing efficiency and monitoring capabilities. The GNC701 can also be viewed at night with night vision up to 30 metres offering versatility that is needed in the day and night environments.