Dciustfhe 2Pcs RS485 Wireless Transceiver 20DBM 433Mhz Transmitter and Receiver VHF/UHF Radio Modem for Smart Meter PTZ Camera

4. The module can support one-to-one, one-to-many transparent transmission communication through ID setting Changing the rate of a different serial port synchronously change the rate at which data is sent over the air. ( 10kbps-100kbps) 2. Operating frequency range ( 433 - 458.5MHz , up to 255 communication channels). Maximum 100mW ( 20dBm ) transmit power ( 10 levels of power can be set ). 3. Built-in MCU, use serial port to communicate with external devices. Send 31 bytes at a time. 1. Long-distance wireless transmission (up to 500 meters in open area , 10kbps rate in the air ). 5. Set the ''critical three minutes''. The module can send and receive data normally within three minutes of power-on. You can send the AT '' AT+ENABLE=1 '' to make the module enter the AT state for parameter setting. There is only this reserved in these three minutes. After more than three minutes, you not be to enter the AT mode, you can only send and receive data, '' AT+ENABLE=1'' also be sent out as data, there are no reserved words at this time.