Product features industrial-grade chip and high-precision SHT20 temperature and humidity sensors, ensuring reliable performance, high accuracy, and interchangeability. Equipped with RS485 hardware interface with protection design, compatible with standard industrial Modbus RTU protocol. This device supports both MODBUS RTU and ordinary UART communication protocols, allowing users to select the preferred protocol. UART communication includes an automatic reporting function, enabling continuous output of temperature and humidity data when connected via RS485 serial interface. Installation steps: 1. Connect the signal receiver to the RS485 terminal. 2. Connect the power supply to the power terminal. 3. Process the acquired data according to specific application requirements. Notes: 1. Users must provide their own Modbus debugging tool and RS485 debugger. 2. Users are responsible for writing code based on the communication protocol and command structure when using a controller to receive data. Features: - Supports MODBUS RTU protocol - RS485 communication up to 1000 meters - Standard DIN35 rail mounting - High measurement accuracy - Utilizes industrial SHT20 temperature and humidity sensor with RS485 communication - Dual protocol support: standard MODBUS and ordinary UART protocol, selectable by user - Adjustable baud rate - UART protocol supports automatic data upload with configurable transmission speed Parameters: - Product Name: Modbus RTU RS485 SHT20 Temperature Humidity Transmitter - Operating Voltage: DC 5V30V - Output Signal: RS485 - Communication Protocol: Modbus RTU and ordinary UART protocol - Communication Address: 1247 (default 1) - Temperature Range: -40C to 60C - Temperature Accuracy: 0.5C - Temperature Resolution: 0.1C - Humidity Range: 0%RH to 80%RH - Humidity Accuracy: 3%RH - Humidity Resolution: 0.1%RH - Power Consumption: Less than 0.2W - Operating Temperature: -40C to 85C - Operating Humidity: 0% to 95%RH (non-condensing) - Dimensions: 65 x 46 x 28.5mm - Condition: New - Type: Logic ICs - Power Dissipation: Less than 0.2W - Color: White - Material: Plastic - Application: Temperature and Humidity Transmitter - Feature: RS485 supports long-distance communication up to 1000 meters Applications: - Factory monitoring - Equipment cabinet monitoring - Environmental testing - Home security systems Package Contents: 1 x Temperature and Humidity Sensor Note: The package includes only the items listed above. Other accessories are not included. Slight color variations may occur due to lighting and display differences. Measurement tolerance: 13cm.