RS485 Temperature & Humidity Sensor Probe MODBUS RTU

DFRobot

2 reviews Write a Review
SKU:
147-SEN0438
MPN:
SEN0438
SEN0438 - RS485 Temperature & Humidity Sensor Probe MODBUS RTU
RS485 Temperature & Humidity Sensor Probe (Modbus RTU) - Precise industrial-grade sensor with RS485 Modbus RTU for accurate temperature and humidity measurements in various applications. View full description
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₹3,189.54 inc. GST
₹2,703.00 ex. GST

Technical Specifications

Brand:
DFRobot
Temperature Measurement Range:
-40 ~ 120C
Humidity Measurement Range:
0 ~ 99.9%RH
Temperature Accuracy:
0.3C (25C)
Humidity Accuracy:
+-2%RH (25C)
Sampling Cycle Period:
3 sec
Power Supply Voltage:
12 ~ 36V (DC)
Output Signal:
RS485 signal
Communication Protocol:
standard MODBUS RTU protocol
Baud Rate:
9600 (default)
Display Resolution:
Temperature: 0.1C; Humidity: 1%RH
Weight:
110.0g
Sensitivity Attenuation Value:
temperature＜0.1C/year; humidity＜0.5%RH/year
Wire Sequence:
yellow wire - RS485 A; red wire - power input; black wire - GND; white wire - RS485 B

Warranty Information

All the products supplied by Evelta are genuine and original. We offer 14 days replacement warranty in case of manufacturing defects. For more details, please visit our cancellation and returns page.

Description

 
 
How to Get Humidity Data from an RS485 Temperature & Humidity Sensor
 
The RS485 temperature and humidity sensor is an industrial-grade device that delivers high-precision readings. It utilizes a high-quality digital integrated transducer and a dependable digital processing circuit to convert environmental temperature and humidity values into corresponding RS485 signals. The sensor is capable of reliable centralized monitoring when used with a host computer system.

The module boasts a broad measurement range, exceptional detection accuracy, and rapid response speed. It enables temperature detection from -40 to 120 degrees and humidity detection from 0 to 99.9% RH. Encased in a robust aluminum alloy shell, the sensor is waterproof and heat-resistant, rendering it appropriate for use in harsh environments. Moreover, its probe incorporates a breathable and dust-proof design, effectively safeguarding the internal circuit board and extending the sensor's lifespan.

This product boasts exceptional long-term stability, minimal latency, high resistance to chemical pollutants, and superior repeatability. As such, it provides an ideal solution for precisely measuring relative humidity and temperature in HVAC (Heating, Ventilation, and Air Conditioning) applications. The sensor finds versatile use in building automation, climate and HVAC automatic control, climatology stations in museums and hotels, closed-loop control of HVAC systems, and more.

Shipping List

  • RS485 Temperature Humidity Sensor x1
FAQs:
 

Q: What are the temperature and humidity measurement ranges of this sensor?

A: The RS485 Temperature & Humidity Sensor measures temperatures from -40°C to 120°C and humidity levels from 0% to 99.9% RH.

Q: What is the accuracy of the sensor?

A: The temperature accuracy is ±0.3°C at 25°C, and the humidity accuracy is ±2% RH at 25°C.

Q: What type of communication protocol does this sensor use?

A: The sensor uses the standard MODBUS RTU protocol over RS485 for communication.

Q: Is the sensor suitable for use in harsh environments?

A: Yes, the sensor is housed in a waterproof and heat-resistant aluminum alloy shell, making it suitable for harsh environments.

Q: What are the power requirements for this sensor?

A: The sensor operates on a power supply voltage ranging from 12V to 36V DC

 

    2 Reviews

  • Posted by Vivek Awasthi on 12th Aug 2026

    5

    Straightforward setup, quick customer support response

    Packaging looked good upon arrival. This works great. I had a question and customer support replied fast. Very good experience.

  • Posted by Deenanath Subramanian on 11th Aug 2026

    5

    Quick delivery and good build quality for the price

    For the price it's great. The build quality is better than I thought for the price. Pretty good.

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