Industrial RS485 Temperature and Humidity Sensor (SHT20) — Modbus RTU and UART Compatible Key benefits Accurate, reliable measurements: High-precision SHT20 temperature and humidity sensors deliver stable, interchangeable readings suitable for industrial use. Easy integration: Hardware RS485 interface with protection and protocol-layer compatibility with standard Modbus RTU simplifies connection to PLCs, SCADA and building management systems. Flexible communication: Supports both Modbus RTU and ordinary UART. UART mode can automatically report temperature and humidity to a connected serial device, reducing polling overhead. Industrial-grade design: Uses an industrial-grade chip for consistent performance and long-term stability in demanding environments. Main functions and attributes Sensors: High-precision SHT20 temperature and humidity sensors. Processing: Industrial-grade processing chip for reliable, repeatable measurements. Communication interfaces: RS485 hardware interface with protection design. Protocol layer compatible with standard Modbus RTU. Ordinary UART communication supported; UART supports automatic report function. Interchangeability: Sensor and system compatibility designed for straightforward replacement and integration. Performance: High precision and good reliability consistent with industrial monitoring requirements. Typical use scenarios Industrial environmental monitoring: Continuous temperature and humidity monitoring in factories, production lines, and process control systems using Modbus RTU over RS485. Building automation and HVAC: Integration with BMS or HVAC controllers to maintain climate control and trigger alarms or control actions. Server rooms, storage and cold-chain monitoring: Real-time environmental data collection and reporting to controllers, data loggers, or monitoring tools. Basic setup and operation 1. Connect the signal lines to the RS485 terminal (connect to the RS485 receiver or RS485 network). 2. Apply power to the power terminal. 3. Read and process the acquired temperature and humidity data according to application needs (poll via Modbus RTU or receive automatic UART reports). Important notes for integration Users should prepare their own Modbus debugging tool and RS485 debugger for commissioning and testing. If using a controller to receive data, users must implement code according to the communication protocol and commands (Modbus RTU or UART) to parse and process sensor output. Compatibility and integration tips Use Modbus RTU for standardized industrial integration with PLCs and SCADA. Use UART with automatic reporting for simpler serial connections or when periodic unsolicited updates are preferred. Ensure proper RS485 wiring and grounding, and use available debugging tools during setup to verify communication and addressing. This sensor