flir digimerge m31041 mpx security dvr, 4 channel, supports 720p/1080p/960h resolutions, runs 960h hd-cvi, analog and up to 1080p lorex and flir mpx cameras, flir cloud app, black, 1tb preinstalledM3104 Series MPX Megapixel Over Coax DVR 4 channels, 1080pM3104 SeriesFLIR's M3104 Series DVRs use the latest HD-CVI technology, giving you the flexibility to upgrade your security systems to 1080P HD resolution using existing coax cabling. With support for both HD resolution MPX cameras, and standard analog cameras, the DVR is ideal for retrofit applications. MPX also facilitates advanced features previously unavailable over a coax cable including duplex transmission for PTZ control, and extended distance cable runs up to 2300ft/700m.Supports MPX HD 1080p/720p cameras and standard analog camerasIdeal for retrofit using existing coax cableEasy, Secure Cloud connectionZero video latencyCabling up to 2300ft/700mDuplex transmission for camera control (PTZ, focus, alarm trigger)FLIR DDNS service optionH.264 video compressionHDMI/VGA simultaneous video outputAudio In / OutSupports 1x HDD up to 6TB, 2x USB 2.0 portsRS-485 supports Pelco D & P PTZ