DFROBOT RS485 Temperature & Humidity Sensor
RS485 temperature and humidity sensor by DFROBOT. Features a waterproof aluminium shell, -40 to 120°C range, and MODBUS RTU protocol.
The DFROBOT RS485 Temperature & Humidity Sensor utilises a high-quality digital integrated transducer and reliable digital processing circuit to convert ambient temperature and humidity into corresponding RS485 signals. This enables reliable centralised monitoring when connected to a host computer system.
Featuring a wide measurement range, high detection accuracy, and a fast response speed, this module supports temperature detection from -40°C to 120°C and humidity detection from 0 to 99.9% RH. The sensor is fully wrapped by an aluminium alloy shell, making it both waterproof and heat resistant, which ensures suitability for harsh environments. Additionally, the probe employs a breathable and dust-proof design that effectively protects the internal circuit board and prolongs operational lifespan.
Key Features
- Remarkable long-term stability and low latency
- High resistance to chemical pollution
- Superior repeatability
- Standard MODBUS RTU communication protocol
With an impressive temperature accuracy of ±0.3°C and humidity accuracy of ±2% RH (at 25°C), this sensor provides precise environmental data. It operates on a power supply voltage ranging from 12 to 36VDC and features a quick 3-second sampling cycle, ensuring consistent and up-to-date readings for your monitoring needs.
- Centralised monitoring with host computer systems
- Harsh environments
- Industrial environmental monitoring
- Chemical exposure areas
- Communication Protocol: MODBUS RTU
- Signal Output: RS485
- Temperature Range: -40°C to 120°C
- Humidity 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
- Display Resolution (Humidity): 1% RH
- Supply Voltage: 12 to 36VDC
- Baud Rate: 9600 (default)
- Sampling Cycle: 3 seconds
- Sensitivity Attenuation (Temperature): <0.1°C/year
- Sensitivity Attenuation (Humidity): <0.5% RH/year
- Shell Material: Aluminium alloy
- Sensor Terminals: Cable
- Sensor Mounting: Cable
- Probe Size: 200mm (L) × 15.7mm (D)
- Product Height: 43 mm
- Product Width: 33 mm
- Product Depth: 15 mm
- Weight: 92 grams
- Sensitivity attenuation value: temperature＜0.1°C/year; humidity＜0.5%RH/year
- Type: RS485
- Supply Voltage Min: 12VDC
- Supply Voltage Max: 36VDC
- Sensing Accuracy: 2%
- Operating Temperature Min: -40°C
- Operating Temperature Max: 120°C
- SVHC: No SVHC (04-Feb-2026)
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
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