PT100 Platinum RTD Temperature Sensor with RS485 Modbus RTU Output

Meet the PT100 Platinum RTD Temperature Sensor — a precision-grade, industrial-quality sensing module designed for accurate, real-time temperature monitoring across a wide range of applications. Whether you're building a home automation system, managing industrial equipment, or prototyping an electronics project, this compact and customizable sensor delivers consistent, reliable readings you can count on.

Key Features

PT100 Platinum RTD Element: Industry-standard resistance temperature detector (RTD) for high-accuracy temperature measurement across a broad operating range.
RS485 / Modbus RTU Output: Seamlessly integrates with PLCs, microcontrollers, and SCADA systems via standard RS485 communication and Modbus RTU protocol.
USB to RS485 Adapter Compatible: Available in a bundle with a USB-to-RS485 converter for direct connection to a PC or laptop — ideal for development and testing.
Flexible Quantity Options: Available in 1-piece, 5-piece, and 10-piece configurations to suit individual projects or larger installations.
Customizable: Supports customized configurations to meet specific project requirements.
Compact & Durable Design: Polymer housing keeps the module lightweight while protecting internal components from everyday handling.
Wide Application Range: Suitable for HVAC systems, industrial automation, laboratory equipment, aquariums, 3D printers, greenhouse monitoring, and more.

Specifications

Sensor Type: PT100 Platinum RTD (Resistance Temperature Detector)
Output Protocol: RS485 / Modbus RTU
Housing Material: Polymer
Customization: Available
Options: USB to RS485, 1pcs, 5pcs, 10pcs

What's in the Box

PT100 RTD Temperature Sensor Module (quantity per selected option)
USB to RS485 adapter (included in applicable bundle option)

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Frequently Asked Questions

Q: What does a PT100 RTD temperature sensor do?

A: A PT100 RTD (Resistance Temperature Detector) measures temperature by correlating the electrical resistance of its platinum element to a known temperature value. As temperature changes, the resistance of the platinum element changes proportionally, enabling highly accurate and stable temperature readings — making it a trusted choice for industrial, laboratory, and automation applications.

Q: What is the RS485 Modbus RTU protocol and why does it matter?

A: RS485 is a robust serial communication standard widely used in industrial environments for its long-distance transmission capability and noise resistance. Modbus RTU is a communication protocol layered on top of RS485 that allows multiple devices to communicate on the same network. Together, they make this PT100 sensor easy to integrate with PLCs, data loggers, microcontrollers, and SCADA systems without complex wiring.

Q: Can I connect this sensor directly to my computer?

A: Yes! Select the "USB to RS485" bundle option and you'll receive a USB-to-RS485 adapter alongside the sensor module, allowing you to connect directly to a PC or laptop. This is perfect for development, calibration, data logging, and testing environments.

Q: Is this sensor suitable for DIY and hobbyist projects?

A: Absolutely. The PT100 RTD sensor module with Modbus RTU output is popular with makers, hobbyists, and engineers alike. It works seamlessly with Arduino, Raspberry Pi, and other microcontroller platforms (with an appropriate RS485 interface), making it ideal for custom temperature monitoring solutions such as greenhouse automation, aquarium management, 3D printer enclosures, and smart home systems.

Q: How many sensors can I purchase at once?

A: This listing offers flexible quantity options — choose from 1-piece, 5-piece, or 10-piece configurations depending on your project scale. Bulk options offer great value for multi-point monitoring setups or spare stock.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.