TIGERSECU Super HD 1080P 16-Channel Hybrid 4-in-1 DVR Security Recorder with 4TB Hard Drive, for 2MP TVI/AHD/CVI/Analog Cameras (Cameras Not Included)

ANNKE H.265+ 1080p 16 Channel Security Camera System, 16 CH 5 in 1 DVR Recorder with Hard Drive 4TB and 8 x 1080p Weatherproof CCTV Bullet Camera Outdoor Indoor with 100ft Night Vision, Motion Alerts

TIGERSECU Super HD 1080P 16-Channel Hybrid 4-in-1 DVR Security Recorder Without Hard Drive, for 2MP TVI/AHD/CVI/Analog Cameras (Cameras and Hard Drive Not Included)

ANNKE 16CH 3K Lite Security Camera System, 5-in-1 H.265+ 16 Channel DVR Recorder with 8X 3K Built-in Mic Smart Dual Light Cameras, AI Human/Vehicle Detection, Remote Access, No HDD Included

ANNKE Home Security Camera System, 16 Channel 3K Lite DVR Recorder, 12x Outdoor Wired Surveillance CCTV Cams, Up to 100 ft Night Vision, AI Human/Vehicle Motion Detection, Remote Access, No Hard Drive