Temperature and Humidity Transmitter – RS485 Modbus RTU

📖 Description

• A temperature and humidity transmitter designed for accurate environmental monitoring. It features an RS485 serial communication interface with Modbus RTU protocol, making it ideal for industrial automation, HVAC systems, and remote sensing applications. Equipped with a high-precision SHT20 sensor, it provides stable and reliable temperature and humidity measurements. Its compact design and durable construction ensure long-term performance in various environmental conditions.

🔧 Technical Specifications

• Output Signal: RS485
• Communication Protocols: Modbus RTU and standard UART (user-selectable)
• Communication Address Range: 1–247 (default: 1)
• Baud Rate: User-configurable
• Power Supply: DC 5V–30V
• Power Consumption: <0.2W
• Temperature Measurement Range: -40°C to +60°C
• Temperature Accuracy: ±0.5°C
• Temperature Resolution: 0.1°C
• Humidity Measurement Range: 0%RH to 80%RH
• Humidity Accuracy: ±3%RH
• Humidity Resolution: 0.1%RH
• Operating Temperature: -40°C to +85°C
• Operating Humidity: 0%RH to 95%RH
• Communication Distance: Up to 1000 meters over RS485
• Mounting: Standard DIN35 rail
• Dimensions: 65 × 46 × 28.5 mm​

⚙️ Features

• High-Precision Sensing: Utilizes the SHT20 sensor for accurate temperature and humidity measurements.
• Dual Communication Protocols: Supports both Modbus RTU and standard UART, providing flexibility for various applications.
• Long-Distance Communication: RS485 interface supports communication distances up to 1000 meters.
• User-Configurable Settings: Allows users to set communication addresses and baud rates as needed.
• Automatic Reporting: In UART mode, the device can automatically output temperature and humidity data without polling.
• Industrial Design: Features a durable ABS plastic housing with lightning protection and DIN rail mounting for easy installation.

🛠️ Applications

• Environmental Monitoring: Ideal for monitoring temperature and humidity in greenhouses, warehouses, and laboratories.
• HVAC Systems: Ensures optimal climate control in heating, ventilation, and air conditioning systems.
• Industrial Automation: Monitors environmental conditions in factories and equipment enclosures.
• Smart Agriculture: Assists in maintaining appropriate environmental conditions for crop growth.
• Home Security: Detects environmental changes that may indicate security breaches or system failures.​