Multi-channels: 8 channels, expandable for 16/32 channels Baud rate in air: 1200/2400/4800/9600bps 433M, 450M, 868M, 915MHz RF module, wireless transmitter, data radio, RF modem, wireless data modules for serial data to RF, replace RS232/RS485 cable Yishi wireless data modules designed for the professional wireless data transmission systems in short range. The module works on ISM frequency band, ...