RT38B01 433-458Mhz UHF DTU RS485 BUS RF Serial Port Uart Transceiver Module for Smart Meter PTZ Camera PLC Modbus

Description Working voltage 4 5V 5 5V Interface RS485 5V GND A B Frequency 433MHzTransmit power 40 20dBm Receiver sensitivity 114dBm Operating temperature 25℃ 75℃ Transparent transmission mode baud rate 1200 2400 4800 9600 Default 19200 Open ground Transmission distance 500MSize without antenna 74x24x16mmWeight without antenna 18gModule features 1 Long distance wireless transmission up to 500 meters in open area 10kbps baud rate in the air 2 Operating frequency range 433 458 5MHz up to 255 communication channels 3 Maximum 100mW 20dBm transmit power up to 10 levels of power 4 Built in MCU use serial port to communicate with external devices5 Send 31 bytes at a timeThe module can support one to one one to many transparent transmission communication through ID setting Changing the baud rate of a different serial port will synchronously change the rate at which data is sent over the air 10kbps 100kbps 6 Set the critical three minutes The module can send and receive data normally within three minutes of power on You can send the AT command AT ENABLE 1 to make the module enter the AT command state for parameter setting There is only this reserved word in these three minutes After more than three minutes you will not be able to enter the AT command mode you can only send and receive data AT ENABLE 1 will also be sent out as data there are no reserved words at this time How to use 2pcs 1 Use 2PCS Module