Hi
@berto01
Definitely looks like a Dahua OEM kit from Lorex ( now owned by Dahua )
4K Nocturnal IP NVR System with 16-channel NVR and Eight 4K Smart IP Optical Zoom Security Cameras with Real-Time 30FPS Recording
NC4K3MV-168BBNEW PRODUCT
$1,999.99
$1499.99 AFTER CODE LOREX25
Camera:
LNB9282B
4K Motorized Varifocal Smart IP Bullet Security Camera
Camera spec sheet here:
Image Sensor 4K (8MP)
1/2.8" CMOS
Sensor is consider rather small by ipcamtalk community standards for a 8MP resolution camera
with 4 cameras = $1249, with 8 cameras $1999 => thus $750 for 4 more cameras .. or about $187 per camera .. with 25% off .. about $140 ..
as these are smaller sensor cameras, I would look to see what Andy can help you out with - believe you can find nicer larger sensor models from him for not much more iirc.