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DFRobot Temperature & Humidity Sensor - RS485

by DFROBOT
This is a high-precision industrial-grade RS485 temperature and humidity sensor. It uses high-quality digital integrated transducer and reliable digital...
25-00016601
Company: DFROBOT
Part Number: SEN0438
Made in: China
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37.00
Without VAT 29.84
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DESCRIPTION

This is a high-precision industrial-grade RS485 temperature and humidity sensor. It uses high-quality digital integrated transducer and reliable digital processing circuit to convert the temperature and humidity in the environment into corresponding RS485 signals. And it can reliably carry out centralized monitoring jobs with the host computer system.

Featuring a wide measurement range, a high detection accuracy, and a fast response speed, the module supports temperature detection of -40 to 120 degrees and humidity detection of 0 to 99.9% RH. Fully wrapped by the aluminum alloy shell, the sensor is waterproof and heat resistant, which makes it suitable for harsh environments. Besides, its probe employs a breathable and dust-proof design that effectively protects the internal circuit board and prolongs the service validity period.

The product has remarkable long-term stability, low latency, high resistance to chemical pollution, and superior repeatability. It is an ideal solution for accurately measuring relative humidity and temperature in HVAC(Heating, ventilation, and air conditioning) applications. This sensor can be widely used in building automation, climate and HVAC automatic control, climatology stations in museums and hotels, closed-loop control of HVAC systems, etc.

SPECIFICATIONS

Sensor Type:
  • Humidity
  • Temperature
Typical Input Voltage:
  • 12-36VDC
Interface:
  • Digital
Communication Protocol:
  • MODBUS

SPECIFICATIONS

  • 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: 200x15.7mm(D)
  • Output Signal: RS485 signal
  • Communication Protocol: standard MODBUS RTU protocol
  • Baud Rate: 9600 (default)
  • Display Resolution: Temperature: 0.1℃; Humidity: 1%RH
  • Product Net Weight: 110.0g
  • Sensitivity Attenuation Value: temperature<0.1℃/year; humidity<0.5%RH/year

  • Wire Sequence:
    • Yellow wire - RS485 A
    • Red wire - Power input
    • Black wire - GND
    • White wire - RS485 B