... resolution recording. Up to mega-pixel for 4 channel(1280x1024) and D1 resolution for 1 channel(704x576). 3. Compact size, much easier for ... ; DVR can detect the short cut on VIDEO INPUT1/2/4 channel 6. VIDEO OUTPUT: 1channel, 1.0V,p-p,75Ω,BNC ... channel,500Ω,RCA 15. AUDIO LEVEL: 1V ~2V, p-p 16. AUDIO COMPRESSION: G.711 17. STORAGE: Hard drive, SD card,external ...