The SPE-1610 is a 16-channel encoder, with dual codec supporting H.264/MJPEG, at 30fps @ 2MP or lower and 15 fps @ 4MP. Compatible with AHD/CVI/TVI/CVBS video formats. Supports RS-485/422 Interface, Pelco C when using CVBS or ACP up-coax protocol @ AHD, ONVIF protocol support, HDMI output, I/O 16/4, Audio in/out 4/1, 12VDC. Supports ECO. Stream. bandwidth reduction technology (Firmware v1.04b /v1.30+ only)