RF3791 IP POE Combo:
1 x HiLook 4 channel NVR POE H265+ high compression 
2 x HiLook 4mm 4MP POE bullet IR cameras 
2 camera IP combo kit, RF3791 contains a 4 channel NVR with POE, NVR-104MH-C/4P. The camera combo also contains 2 x 4MP HiLook by Hikvision bullet cameras with 4mm fixed lens and 30m IR range.
Upgrade your system and add additional cameras, brackets, cables or upgrade to an 8 channel NVR for future systems.
RF3791 Combo Contains:
HiLook by Hikvision Bullet Cameras - IPC-B140H-M 
Up to 4 megapixel
4mm fixed lens
PoE (Power over Ethernet)
Up to 30m IR range
IP67 weatherproof rating
4ch HiLook by Hikvision NVR - NVR-104MH-C/4P 
4ch POE Network Video Recorder
Recording at upto 8MP resolution
H.265+/H.265/H.264/H.264+ video formats
4 independent PoE network interfaces are provided
Connectable to the third-party network cameras
Up to 4 IP cameras can be connected
Please see Downloads and Datasheets
Easy connection to the internet with the Hik-Connect. No technical or port forwarding knowledge or expertise required.
FREE iPhone, iPad, Android, PC & MAC remote viewing software (iVMS 4200 & Hik-Connect)
Hikvision H.265+ Encoding Technology
Hikvision H.265+ can greatly decrease the file size in the all-day monitoring and decrease
the storage cost in the end.
As a very approx guide for 4 cameras: