RS485 Temperature and Humidity Sensor

The RS485 temperature and humidity sensor is a high-precision, industrial-grade sensor designed for demanding monitoring tasks. With its wide measuring range from -40 to 120 °C for temperature and 0 to 99.9% relative humidity, it is suitable for a variety of applications. The sensor uses high-quality digital converters and a reliable digital processing circuit to convert temperature and humidity data into RS485 signals. Its robust aluminum alloy housing makes it waterproof, heat-resistant, and durable even under extreme environmental conditions. Additionally, the breathable and dustproof probe design protects the internal components and ensures a long lifespan. Thanks to its high accuracy of ±0.3 °C at 25 °C and ±2% RH at 25 °C, the sensor provides precise and repeatable results. The sensor supports the MODBUS-RTU protocol, allowing easy integration into existing systems. With a fast sampling time of 3 seconds, it is ideal for real-time monitoring. Whether in air conditioning, building control, or industrial automation – this sensor is the perfect choice for reliable measurements.

Recommended Accessories:

• RS485 Shield for Arduino UNO
• Industrial USB to RS232/485 Converter FT232RNL

Features:  

• The sensor measures temperatures in the range of -40 to 120 °C, making it versatile.  
• The humidity measurement ranges from 0 to 99.9% RH, providing precise results.  
• The temperature accuracy is ±0.3 °C at 25 °C, ensuring precise monitoring.  
• The accuracy in humidity measurement is ±2% RH at 25 °C.  
• The aluminum alloy housing is waterproof and heat-resistant, making the sensor suitable for harsh environments.  
• The MODBUS-RTU protocol enables easy integration into various control systems.  
• With a sampling time of 3 seconds, the sensor is suitable for real-time monitoring.  

Application Examples:  

• Monitoring of climatic conditions in museums or hotels.  
• Integration into heating, ventilation, and air conditioning systems (HVAC).  
• Use in building automation for real-time control.  
• Monitoring temperature and humidity in warehouses.  
• Industrial applications in closed-loop control systems.  

Documentation:  

• Manual English

Technical Specifications:

• Manufacturer: DFRobot  
• Manufacturer SKU: SEN0438  
• Temperature measurement range: -40 to 120 °C  
• Humidity measurement range: 0 to 99.9% RH  
• Temperature accuracy: ±0.3 °C at 25 °C  
• Humidity accuracy: ±2% RH at 25 °C  
• Display resolution: Temperature: 0.1 °C; Humidity: 1% RH
• Sensitivity drift: Temperature <0.1 °C/year; Humidity <0.5% RH/year
• Sampling time: 3 seconds  
• Supply voltage: 12 to 36 V DC  
• Output signal: RS485 signal
• Communication protocol: Standard MODBUS-RTU Protocol
• Baud rate: 9600 (Standard)
• Cable colors and functions: Yellow cable - RS485 A; red cable - power supply; black cable - GND; white cable - RS485 B 
• Product dimensions: 200 x 16 x 16 mm  
• Weight: 98 g  

Delivery Contents:  

• 1x RS485 Temperature and Humidity Sensor