Howen AHD Mobile Video Recorder support 4 channel video& audio in and 2 channel video& audio out.

Howen Hero-MD31 series is an advanced and function-extensive Mobile Video Recorder specially designed for high definition surveillance System, With powerful processor and updated embedded OS, it will greatly enhance the customer experience, It can realize 720P/1.3Megapixel Resolution, WD1, D1, HD1, CIF for local recording & remote real time high definition viewing.
Supports 4 channels AHD+1 channel 720P IPC (PON)
Modular design for easy maintenance
Revolutionary anti-vibration technology for 360 degree installation
Supports 2.5" 2TB hard disk and SD card for mirror recording
Dual streams for local recording and wireless transmission
Internal GPS for location tracking, 3G/4G for live view and management (optional)
Internal Wi-Fi 802.11n supported for auto downloading (optional)
Built-in inertia sensor