... SD card mini mobile DVR: ELP-MDR504S Specifications:Power In: 12V DC. Power Out: 12 V DC, Max Current 1A. Video ... Input:4channels/2channels/1channel,1.0Vp-p,75Ω,BNC. Video Out: 1 channel,1.0Vp ... -p,75Ω,CVBS or LCD. Video Standard:PAL/ NTSC. Audio Input:2 channels(Stereo),Line ... Bitrate:1.0/1.5/2.0 MBps. Storage:SD Card, external USB device Alarm Input:4 Alarm Input ...