... transmit Function (100m)3, Immunity to noise and interference4, Passive device5, Compact design Technical SpecificationModel NT-621Environment Close-Circuit TV ... Devices CCTV cameras, monitors, switchers, sequencers, multiplexer, digital video recorders (DVR) and other CCTV equipmentTransmission Transparent to the userBandwidth ... -20 to 85 C. Humidity: up to 95% 1ch Passive Video Transmit Balun NT-621