... ,CWDM Optional, RS232/RS485/422 Data 8 Channel Digital Video Audio Transmission and Receiver Introduction: The Spacecom 8 Channel Video ... .Support 1/2/4/8 channels Video plus E1,Ethernet.Audio,Data,concertrative management.View the detailed information of power supplySupport ... : -40- +85Humidity: 0-95% Non-Condensing 8 Channel Digital Video Audio Transmitter and Receiver