Four channel video encoder supporting PAL/NTSC and HD analog cameras. Multiple, individually configurable H.264, H.265 and Motion JPEG streams. Frame rate 25/30 fps in all resolutions up to 1080p. Axis Zipstream technology for reduced bandwidth and storage needs. Video motion detection, active tampering alarm and audio detection. I/O for alarm/event handling, serial port for RS422/485 communication. Power over Ethernet or 12-20V DC input. MicroSD/MicroSDHC memory card slot for optional local video storage. Two-way audio with analog or digital microphone.