DFRobot RS485 Temperature & Humidity Sensor Module
DFRobot RS485 Temperature & Humidity Sensor Module The RS485 Temperature & Humidity Sensor (SEN0438) is a high-quality industrial temperature sensor designed for precise environmental monitoring in demanding conditions. This device combines a high-quality digital integrated transducer with reliable digital processing circuits to convert temperature and humidity readings into RS485 signals. The sensor features exceptional measurement capabilities with temperature detection from -40°C to 120°C and humidity detection from 0 to 99.9% RH. Its robust aluminum alloy shell provides excellent waterproof and heat-resistant properties, making this HVAC humidity monitor perfect for harsh environments. What sets this RS485 Modbus sensor apart is its remarkable long-term stability, low latency, high resistance to chemical pollution, and superior repeatability. With a temperature accuracy of ±0.3°C and humidity accuracy of ±2% RH (at 25°C), this waterproof environmental sensor delivers reliable data for critical applications. The standard MODBUS RTU protocol ensures seamless integration with existing systems, while the 3-second sampling cycle provides near real-time monitoring capabilities. This versatile sensor is an ideal solution for building automation, climate and HVAC automatic control, climatology stations in museums and hotels, closed-loop control of HVAC systems, and many other applications requiring precise environmental monitoring. Features Temperature measurement range: -40°C to 120°C with ±0.3°C accuracy at 25°C. Humidity measurement range: 0 to 99.9% RH with ±2% RH accuracy at 25°C. Sampling cycle period: 3 seconds for responsive monitoring. Power supply voltage: 12-36V DC for flexible installation. Output signal: RS485 with standard MODBUS RTU protocol. Default baud rate: 9600 for reliable communication. Display resolution: Temperature 0.1°C, Humidity 1% RH. Product dimensions: 200mm length × 15.7mm diameter. Net weight: 110 grams for easy handling and installation.
- High-precision industrial temperature sensor with aluminum alloy shell for harsh environments.
- Wide measurement range: -40°C to 120°C temperature and 0 to 99.9% RH humidity monitor.
- Uses RS485 Modbus communication protocol for reliable centralized monitoring systems.
- Waterproof environmental sensor with breathable, dust-proof design for extended service life.
- Superior accuracy of ±0.3°C for temperature and ±2% RH for humidity at 25°C.
- Fast response time with 3-second sampling cycle for real-time monitoring.
- Operates on 12-36V DC power supply for flexible installation options.
- Ideal for building automation, HVAC control, and climate monitoring applications.
- Temperature Measurement Range -40 ~ 120?
- Humidity Measurement Range 0 ~ 99.9%RH
- Temperature Accuracy ± 0.3°C (25°C)
- Humidity Accuracy ± 2%RH (25?)
- Sampling Cycle Period 3 sec
- Power Supply Voltage 12 ~ 36V DC
- Product Size 200mm (L) × 15.7mm (D) / 7.87×0.62”
- Output Signal RS485
- Communication Protocol Standard MODBUS RTU
- Baud Rate 9600 (default)
- Display Resolution Temperature: 0.1?; Humidity: 1%RH
- Product Net Weight 110.0g
- Sensitivity Attenuation Temperature?0.1?/year; Humidity?0.5%RH/year
- Wire Sequence Yellow: RS485 A; Red: Power Input; Black: GND; White: RS485 B