GV-VS2820 is a powerful H.264 HD Video Encoder with compact size and supports 8 channels of AHD 18 fps at 3 M, 15 fps at 4 M and 12 fps at 5 M, 1080p / 720p and analog 960H / D1 real-time video. It can be fully integrated with GV-DVR / NVR / VMS to form a powerful IP surveillance solution. GV-VS2820 converts analog signals into high-resolution digitized images up to 4 megapixels and supports over 50 PTZ models to fulfill various project demands. It can record videos to a local USB storage, performing as a compact video recorder. It is also able to trigger Tampering Alarm alerts when cameras are tampered with, which can prevent criminal activities. H.264. 8-channel HD-ADH 18 fps at 3 MP, 15 fps at 4 MP and 12 fps at 5 MP. 8-channel HD-AHD 1080p / 720p and analog 960H / D1 real-time video. 12V DC. Tampering alarm. USB HDD Storage. Support UMTS / 3G / 3.5G / 4G. Automatic switch between WiFi and 3G / 4G. Smart streaming. Support over 50 PTZ models. Support 29 languages on Web interface. ONVIF (Profile S) conformant.