AXIS F41 Main Unit. 1-channel main unit to be used with any of AXIS F Series Sensor Units. Supports 1080p in 15/12.5 fps or 720p in full frame rate. Two way audio, 4 configurable I/Os with 12 V output and RS232. Supports Edge Storage through NAS or SD cards (optional). Two SD card slots. PoE and 8-28 V DC support.