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RS485 Modbus Waterproof Temperature & Humidity Sensor Probe (Industrial Grade)

RS485 Modbus Waterproof Temperature & Humidity Sensor Probe (Industrial Grade)

From AU$72.33Sale Price
Excluding Sales Tax
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CWT-TH03S-H-M
CWT-TH02S-M
CWT-TH03S-M
CWT-TH04S-M
CWT-TH03S-H
CWT-TH01S
CWT-TH04S
CWT-TH02S
CWT-TH05S
CWT-T02S
CWT-TH03S
CWT-T03S
CWT-T01S
Quantity
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The CWT-THxxS RS485 Temperature & Humidity Sensor Probe is a compact, low-power, industrial sensor designed for accurate environmental monitoring in harsh or humid environments. Featuring Modbus RTU communication, a wide DC power range, and a waterproof probe design, it integrates seamlessly with PLCs, RTUs, gateways, and SCADA systems.
This sensor is ideal for industrial automation, agriculture, greenhouses, HVAC systems, equipment rooms, and outdoor enclosures where reliable temperature and humidity data is required.
Key Features
  • RS485 Communication (Modbus RTU) – Industrial standard protocol
  • Wide Power Supply Range – DC 5V to DC 24V
  • Waterproof Probe Design – Suitable for humid and harsh environments
  • Low Power Consumption – < 0.1 W
  • Long Communication Distance – Up to 800 m over RS485
  • High Resolution Digital Output – 0.1 °C / 0.1 %RH
  • Custom Cable Length Available

Temperature

  • Range: –30 °C to +80 °C

  • Accuracy: ±0.5 °C

  • Resolution: 0.1 °C

Humidity

  • Range: 0–100 %RH

  • Accuracy: ±5 %RH

  • Resolution: 0.1 %RH

Electrical Specifications

Parameter Specification
Power Supply DC 5–24 V
Power Consumption < 0.1 W
Output Signal RS485
Protocol Modbus RTU
Communication Distance Up to 800 m
Default Address 1
Default Baud Rate 4800 bps
Data Format N, 8, 1
Default Cable Length 0.5 m (customisable)

RS485 Wiring

Cable Colour Function
Brown Power + (DC 5–30 V)
Black Power –
Yellow / Green RS485 A+
Blue RS485 B–

Modbus Communication Notes

  • Protocol: Modbus RTU

  • Function Code: 03H (Read Holding Registers)

  • Temperature Data:

    • Negative temperatures are transmitted using two’s complement

    • Example:

      • FF9F = –97 → –9.7 °C

  • Humidity Data Example:

    • 01E6 = 486 → 48.6 %RH

Typical Applications

  • Industrial automation & control panels

  • Greenhouses & agriculture monitoring

  • HVAC systems

  • Data centres & equipment rooms

  • Weather stations

  • Smart buildings & infrastructure

  • Environmental monitoring systems

Why Buy from ProSense Instruments?

  • Australian Supply & Fast Dispatch - Local stock on selected products, with same-day dispatch on eligible in-stock orders and pickup by arrangement.

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  • Competitive Pricing & Quantity Discounts - Request a quote for bulk orders, projects and ongoing supply.

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  • Purchase Orders Welcome - 30-day payment terms available for approved accounts.

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  • Free Technical Support - Practical product selection and setup assistance before and after purchase.

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  • Three Specialist Brands, One Team - ProSense Instruments, ProSense Solutions and ProSight Software bring instruments, integrated monitoring solutions and cloud software together under one roof.

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  • Industrial IoT & Project Assistance - Support with monitoring systems, connectivity, configuration and tailored solutions.

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  • Supplying Australian Industry - Instruments and monitoring solutions for industrial, utility, agricultural and government applications.

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