曾凡超 Published at: 2025-12-24 FAQ 422/485 cable is all connected, but why still failed to control a PTZ camera? What frequency range does Syscom421S work in? Does Syscom421S have 4 transmitters, which will occupy4 channels? How many sets of Syscom421S can be used in the same scene at most? How many video outputs does the RX of Syscom421S support? What is the use of the RJ45 interface (network port) of Syscom421S? How to implement the tally function for Syscom421S? How to connect Syscom421S with switchers like SONY, Panasonic, and Yangming to achieve wireless Tally functionality? Why Doesn't the TX Pair with RX? Submit Feedback Previous Quick Guide
