4 Channel Video Decoder D1/H- ... rate 16K~4Mbps,customizedBit stream typeComposition stream/Video streamAudio Compression G.726,G.711,ADPCM ... at customer endPassword protectionSupportIntellectual alarmMobile detection, video shielding, video loss, network breakdown, abnormality in storageBasic ... ~ 85%Size153x182x47(mm)Weight0.71KgGT-VD2140 4 Channel D1 Network Video Decoder GT-VD2140 4 Channel D1 Network ...