... d1 audio alarm input 1 SATA recording professional h.264 wireless wifi 3g network video server with 2 SATA dahua Features ... channel, BNC16 channel, BNCOutput1HDMI, 1VGA, 1TV, 1Spot BNC(1.0Vp-p, 75)StandardsPAL(625Line, 50f/s), NTSCAudioInput4 channel8 channel4 channelOutput1 channelTwo ... 42.1mmWeight2.5KgHK Fair:UK Fair: dahua professional h.264 wireless 3g network video server support 2 SATA