GV-VS21600 is a powerful H.264 HD Video Encoder with compact size. It supports real-time video with 8-channel between 3 MP and 5 MP, or up to 16 channels at 1080p, 720p, 960H and D1 resolution. The HD Video Encoder can be fully integrated with GV-DVR / NVR / VMS to form a powerful IP surveillance solution. It converts analog signals into high-resolution digitized images of up to 5 megapixels and supports over 50 PTZ models to fulfill various project demands. GV-VS21600 can record videos to a local USB storage, performing as a compact video recorder. It is also able to trigger Tampering Alarm alerts when the cameras are tampered with, which can be used to prevent criminal activities. H.264. 8-channel combo 18 fps at 3 MP and 15 fps at 4 MP / 5 MP. 16-channel combo 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. Support over 50 PTZ models. Support 29 languages on Web interface. HD-TVI (1.0 / 2.0 standard) / HD-AHD. ONVIF (Profile S) conformant.