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Mini size SD card car 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 In,50 400mv,50Hz 3500Hz. Audio Out: 1 channel. Compression: Advanced H.264(High/main/baseline profile). Quality: Full D1/CIF. Max Resolution:PAL720×576/NTSC: 720×480. Frame Rate: PAL:25/12/8/6/5/4/3/2/1 fps, NTSC:30/15/10/7/6/5/4/2/1 fps. Bitrate:1.0/1.5/2.0 MBps. Storage:SD Card, external USB device Alarm Input:4 Alarm Input. Alarm Output:2 Alarm Output. Ethernet:10/100M Base-T, RJ45. GPS:NMEA 183(optional). PTZ:RS485. Language:English / Chinese/ Russian/ French/ JapaneseSupported Band:Quad band,850/900/1800/1900 MHz (applicable for models that support GPRS only) Product Size:90mm*80mm*20 mm. Weight:1.2Kg. Power Consumption:10W. Working Condition:Temperature: 0 +50, Humidity: <90%.