The PSRG481 device is a very small video recording micro unit DVR with a robust aluminum alloy housing that can operate at 640x480 video resolution for each single channel with different programmable recording modes, with the following interfaces: - 2 AV IN channels to be connected to two cameras (optional, not included in the sales package) - 1 AV OUT channel to be connected to an external monitor (optional, not included in the sales package) - Slot for the storage of an SDHC memory for the storage of recorded data (maximum capacity of 128 GB, optional, not included in the sales package) - USB interface for connection to a computer for video playback - Infrared sensor for receiving commands from remote control. Recording of video images and audio taken by the camera connected to the PSRG481 device takes place on one m emoria SD according to one of the alternative methods: - Manual Registration - Recording for Motion Detection - Automatic Recording to perform continuous recording of images starting from the moment in which the device is powered and on. To view the videos stored on the SD memory card, you can use the device playback function and an external monitor, or use a memory card reader or connect the device directly to a computer to power the device and directly access the video files stored in the memory. Power supply supported from 5 to 30 Vdc. Power supply included 220Vca / 12Vcc, 1A. Dimensions 85x65x15mm, weight 80gr.