XY-MD01 SHT20 Temperature Humidity Transmitter with RS485 Modbus - 1M Shell Cable

The Modbus-RTU protocol is a standard industrial communication protocol for integration with PLCs, SCADA, and data loggers that support Modbus. The Common protocol is a simpler, vendor-specific protocol that features an automatic data upload function, where the module continuously outputs readings at a configurable rate without needing a poll command.

RS485 communication is designed for long-distance data transmission. Using standard 24 AWG twisted-pair cable, you can reliably extend the network up to 1200 meters at 9600 baud. The included 1-meter shielded cable is for direct device connection; for longer runs, use proper RS485 cabling and termination.

The transmitter accepts a wide-range DC input from 4V to 30V, making it compatible with common 5V, 12V, or 24V industrial power supplies. Ensure your power source can provide clean, stable voltage within this range. The device draws less than 0.2W, so current requirement is minimal.

Yes, the baud rate (communication speed) is user-configurable, typically supporting standard rates from 9600 to 115200 bps. The Modbus slave address (unit ID) is also configurable, allowing you to set a unique identifier (1-247) for each device on a multi-drop RS485 network.