Just refer to your preference and set up your own security system. This NVR supports 1 channel's playback at 8MP clarity, 2 CH at 5MP, and 4 CH at 3MP. No need to leave your original cams in the corner, but it saves you extra expense.
eBay
H.VIEW 3MP 5MP WiFi Security Camera Two-Way Audio System Kit Wireless CCTV System NVR with 12" LCD Monitor Outdoor
Aliexpress UK
ANNKE AC500. Even the sensors are pointed to the sun; there are no worries about unclear faces or ambiguous images. There's a microSD card slot that has up to 512G storage space. With the default IR night vision, human/vehicle will trigger the Warm light and turn the vision into color.
eBay
H.View 5Mp Ip Camera Poe Ai Face Detection Cctv Security Cameras Dome Waterproof Audio Video Surveillance For Nvr System Onvif
Aliexpress UK
Video & Audio Video Compression H.264+ IP Video Input 10CH Wireless. Also, the built-in SD card slot maximizes 128G. 5MP 3K Full Color Superb HD. 5MP(2880 1624) resolution with 1/2.8" Progressive Scan CMOS sensor, not only provides higher clarity but also captures everything with more details and vivid color, satisfying your needs for super-high-resolution and smart video surveillance.
eBay
6MP 3K Wireless PTZ Camera Dual Lens WIFI Security Kit 8CH NVR Recorder Set IP Camera 2-Way Audio Video Surveillance System
Aliexpress UK
eBay
Gadinan WiFi 3MP Camera NVR Kit 2.8mm Wide Angle AI Face Detect 8CH Video Surveillance System Outdoor Audio Security CCTV XMEye
Aliexpress UK
1x Hikvision Hilook NVR 4/8 channel -( NVR -104MH-C/4P, NVR -108MH-C/8P, ). HIKVISION HILOOK UK OFFICIAL DISTRIBUTOR. HD 4K POE NVR SYSTEM. CCTV & ALARM EXPERTS. NEED CCTV HELP?. Full Kit Features. 2 YEAR WARRANTY.
eBay
Dahua 4/8 Channels Mini NVR 12MP Network Video Recorder Camera Security System Smart H.265 With VGA HDMI NVR2104-S3 NVR2108-4KS3
Aliexpress UK
ANNKE H800. It recordes longer videos, a 80% increase in storage than H.264 coding, and provides smooth 4K stream without using all the data. TF Card & NVR Storage. Max Recording Resolution Up to 12MP(4096 X 3072) Max Playback Resolution Up to 12MP(4096 X 3072).
eBay
KERUI 2K 4MP Outdoor Full HD Security WIFI IP Camera Icsee 2.5inch HDD Match For Wireless MINI 8CH NVR System Host
Aliexpress UK
Our NVR system has a simpler, more intuitive interface and easy remote access with customized 'ieGeek cam' APP that parents can also operate easily. It adopts advanced H.265 video compression technology to provide sharper and smoother videos/images and save more storage space.
eBay
Fuers H.265 10.1inch LCD Screen 8CH Wireless NVR Security DIY Outdoor Camera WIFI System Surveillance CCTV Audio Video Recorder
Aliexpress UK
With a stunning resolution of 6MP, every detail is captured crisply. High-definition video quality at 6MP. Efficient H.265 compression technology for optimal storage. Compression Technology H.265. ✓Exceptional video quality combined with advanced compression technology for efficient storage.
eBay
KERUI Waterproof 6MP HD Wireless Dual Lens PTZ WIFI IP Home Security Surveillance Camera System 8CH NVR Video H.265 CCTV Kit
Aliexpress UK