Description: Module characteristics 1.Long-distance wireless transmission(opening 1200 m/FU4 mode, air baud rate 1000bps) 2.Operating frequency range(433-458.5MHZ, up to 255 communication channels) 3.Maximum 100mw (20dbm) transmit power (8-speed power can be set) 4.Four working modes to suit different applications 5.Built-in MCU for communication via serial port and external devices 6.The number of bytes sent at one time is up to 256 bytes 7.Module supports one-to-one, one-to-many, many-to-many connections