The ZCXH1404 channel briefcase receiver is a COFDM base station with multi-channel receiving function for team-based tactical video surveillance operations. It decodes and displays 4 separate SD or HD digital video channels simultaneously, allowing its operator to observe activities in 4 different locations. Multiple transmitters operate in different frequency bands simultaneously. It can receive video and audio from 4 transmitters simultaneously and you can switch the video screen. It can be connected to external monitors and wireless modem, to achieve two-way voice intercom communication and integrated monitoring.