Modbus RS485 SHT20 High-Precision Temperature Humidity Sensor

Modbus RS485 SHT20 High-Precision Temperature & Humidity Sensor

Monitor environmental conditions with confidence using this Modbus RS485-enabled SHT20 Temperature & Humidity Sensor. Built around the industry-trusted SHT20 sensing element, this compact transmitter delivers highly accurate real-time readings — making it an essential component for automation systems, data loggers, HVAC controls, smart agriculture, industrial monitoring, and IoT projects.

Key Features

• High-Precision SHT20 Sensor: Delivers reliable temperature and humidity measurements with excellent repeatability and low drift over time.
• Modbus RTU Protocol via RS485: Industry-standard communication interface ensures stable, long-distance signal transmission (up to 1200m) — ideal for integration into PLCs, SCADA systems, and microcontroller platforms like Arduino and Raspberry Pi.
• Wide Measurement Range: Temperature: -40°C to +125°C | Humidity: 0–100% RH.
• Compact & Durable Design: Available as a bare SMD module or with a protective enclosure case for environments where physical protection is needed.
• Easy Integration: Plug into your RS485 network quickly with standard wiring — no complex calibration required out of the box.
• Customizable: Available in two configurations: SHT20 (bare module) or SHT20 with case (enclosed version).

Specifications

• Sensor Model: SHT20
• Communication Protocol: Modbus RTU / RS485
• Output: Digital (RS485)
• Supply Voltage: Typically 5–30V DC (refer to your specific module documentation)
• Package Includes: 1× SHT20 Modbus RS485 Sensor Module (SMD)
• Options: SHT20 (bare) / SHT20 with protective case

Ideal Applications

• Industrial automation & process monitoring
• HVAC and building management systems
• Smart agriculture & greenhouse monitoring
• Arduino, Raspberry Pi & ESP32 IoT projects
• Data logging and environmental research
• Cold chain and storage environment monitoring

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Frequently Asked Questions

Q: What is the Modbus RS485 SHT20 Temperature & Humidity Sensor used for?

A: The Modbus RS485 SHT20 Sensor is designed for accurate environmental monitoring in industrial, agricultural, and smart-building applications. It measures temperature and relative humidity, transmitting data over an RS485 Modbus RTU interface, making it easy to integrate with PLCs, microcontrollers, SCADA systems, and data loggers.

Q: What is the difference between the SHT20 and the SHT20 with case options?

A: The bare SHT20 SMD module is ideal for custom PCB integration or projects where you supply your own enclosure. The SHT20 with case version comes in a protective housing, making it suitable for deployment in environments where the sensor may be exposed to dust, mechanical contact, or general handling — providing added durability without extra assembly.

Q: Is this sensor compatible with Arduino, Raspberry Pi, or other microcontrollers?

A: Yes. The RS485 Modbus RTU interface is widely supported across platforms including Arduino, Raspberry Pi, and ESP32 using standard RS485-to-TTL or RS485-to-USB adapters. The Modbus RTU protocol is well-documented and straightforward to implement with commonly available libraries.

Q: What communication protocol does this sensor use?

A: This sensor communicates using the Modbus RTU protocol over RS485 — a robust, industry-standard serial communication method that supports long cable runs, noise immunity, and multi-device networking on a single bus.

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.