RS485 data transmitter for PTZ control Product Profiles from Shenzhen Yishi

We published RS-485 data transceiver modules for Pan Tilt Zoom control. The RF modules transmite RS485 data between PC and PTZ, it could instead of RS-485 cable/wires. There is no special protocol and quantity needed, modules works same as RS485 cables. We have YS-C30 series RF modules could transmite 2-10km in open area, and PTZ add YS-1020UA as receiver modules.