---
product_id: 206620113
title: "HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead"
price: "C$1390"
currency: NIO
in_stock: true
reviews_count: 3
url: https://www.desertcart.ni/products/206620113-hiletgo-rs485-sht20-temperature-humidity-sensor-module-high-precision-temperature
store_origin: NI
region: Nicaragua
---

# RS485 Lightning-Protected Interface ±3% RH Humidity Precision ±0.3°C Temp Accuracy HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead

**Price:** C$1390
**Availability:** ✅ In Stock

## Summary

> 🌟 Precision sensing that keeps your data ahead of the curve!

## Quick Answers

- **What is this?** HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead
- **How much does it cost?** C$1390 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/206620113-hiletgo-rs485-sht20-temperature-humidity-sensor-module-high-precision-temperature)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Wide Operating Range:** Operates flawlessly from -20°C to 60°C and 0-80% RH for versatile applications.
- • **Industrial-Grade Precision:** Experience ultra-reliable temperature & humidity readings with SHT20 sensor tech.
- • **Robust Lightning Protection:** Built-in safeguards ensure uninterrupted performance in demanding environments.
- • **Seamless Modbus Compatibility:** Plug & play with standard Modbus protocol for effortless integration.
- • **Customizable Addressing & Baud Rate:** Tailor device settings (1-255 address, 9600 baud default) for perfect network fit.

## Overview

The HiLetgo RS485 SHT20 Sensor Module delivers industrial-grade temperature and humidity monitoring with ±0.3°C and ±3% RH accuracy. Featuring a lightning-protected RS485 interface and full Modbus protocol compatibility, it ensures reliable, customizable integration in professional environments. Designed for a wide operating range and flexible addressing, this sensor is ideal for precise environmental data collection.

## Description

Description: This RS485 SHT20 Temperature Humidity Sensor adopts industrial-grade chip and high precision temperature and humidity probe to ensure the excellent reliability, high precision and interchangeability of the products. RS485 hardware interface (with lightning protection design), the protocol layer compatibility standard industry Modbus protocol. Specifications: Working voltage: 9-36V Maximum power: 0.3W Operating temperature: -20 ℃ ~60 ℃, humidity 0% RH~80% RH Accuracy: Temperature ± 0.3 ℃ (25 ℃), humidity ± 3% RH (25 ℃) Output interface: RS485 (standard Rtu protocol) Device address: can be set to 1-255, the default is 1 Baud rate: 9600, 8 bits of data, 1 stop, no parity Wiring instructions: Red: Positive Power Black: Negative Power Yellow: 485-A White: 485-B Package Included: 1* RS485 SHT20 Temperature Humidity Transmitter Sensor Module

Review: Works well, but fairly squirrely addressing & compensating adjustment - Red wire is supply (+) Black wire is supply (-) Yellow wire is data(+) White wire is data(-) Relative addressing is fine unless/until the implementation is wrong. Frankly it's MUCH less time consuming overall to give the MB addresses in both absolute and relative terms, as is done in virtually all professional data sheets. Register 0 (relative) is defined by the Modbus standard as (read code x04) 30001 for input registers and (read code x03) 40001 for holding registers. Register 1 (relative) is 30002 or 40002 and so on. To clarify - in *absolute* addressing terms: Register 30002 = Temp in C x10 (divide by 10 for correct value) Register 30003 = Humidity % x 10 (divide by 10 for correct value) MB addr. node is register 40258, valid values 1-247 Baud rate is register 40259, valid values 9600, 14400, 19200. Temp. comp. is register 40260, valid values +/- 100 (i.e. +/- 10.0 deg. C) Hum. comp. is register 40261, valid values +/- 100 (i.e. +/- 10.0%) Thankfully, once you get past the derp, the sensor works just fine.
Review: Work great with my raspberry pi - Works great. had just a little figure out to do. Most important is, it is 1-based addressing, not 0-based. Also, be sure to pull only 2 input registers, otherwise, it returns exception code. As others mentioned, first is temp in C, second is humidity and you need to scale down by 10.

## Features

- RS485 SHT20 Temperature Humidity Sensor Module
- High Precision Temperature Humidity Monitor Sensor
- Industrial-grade chip and high precision temperature and humidity probe to ensure the excellent reliability
- RS485 hardware interface (with lightning protection design), the protocol layer compatibility standard industry Modbus protocol.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 3.7 out of 5 stars 14 Reviews |

## Images

![HiLetgo RS485 SHT20 Temperature Humidity Sensor Module High Precision Temperature Humidity Monitor Transmitter Sensor Probe Compatible to Modbus with 1M Lead - Image 1](https://m.media-amazon.com/images/I/51N9OgH-dSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐ Works well, but fairly squirrely addressing & compensating adjustment
*by K***S on July 4, 2025*

Red wire is supply (+) Black wire is supply (-) Yellow wire is data(+) White wire is data(-) Relative addressing is fine unless/until the implementation is wrong. Frankly it's MUCH less time consuming overall to give the MB addresses in both absolute and relative terms, as is done in virtually all professional data sheets. Register 0 (relative) is defined by the Modbus standard as (read code x04) 30001 for input registers and (read code x03) 40001 for holding registers. Register 1 (relative) is 30002 or 40002 and so on. To clarify - in *absolute* addressing terms: Register 30002 = Temp in C x10 (divide by 10 for correct value) Register 30003 = Humidity % x 10 (divide by 10 for correct value) MB addr. node is register 40258, valid values 1-247 Baud rate is register 40259, valid values 9600, 14400, 19200. Temp. comp. is register 40260, valid values +/- 100 (i.e. +/- 10.0 deg. C) Hum. comp. is register 40261, valid values +/- 100 (i.e. +/- 10.0%) Thankfully, once you get past the derp, the sensor works just fine.

### ⭐⭐⭐⭐⭐ Work great with my raspberry pi
*by A***Y on March 18, 2025*

Works great. had just a little figure out to do. Most important is, it is 1-based addressing, not 0-based. Also, be sure to pull only 2 input registers, otherwise, it returns exception code. As others mentioned, first is temp in C, second is humidity and you need to scale down by 10.

### ⭐⭐⭐ Good value
*by E***N on May 10, 2021*

Could not read values by plc, yet modscan reads values just fine, sure item is great, could not use with my plc though. OK so I have this reading in the PLC, was using read command 3 instead of 4. Will do some testing to determine accuracy.

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-02-07*