# M5Stack ENV III Unit

> I2C environmental sensor unit with SHT30 temperature/humidity and QMP6988 barometric pressure sensors. Grove connector, compatible with M5Stack ecosystem.

## Quick Facts

- **Brand:** M5Stack
- **Board Type:** sensor-module
- **Price:** ~$8.5
- **Product Readiness:** consumer
- **CPU:** N/A (passive I2C sensor module)
- **RAM:** N/A
- **Flash:** N/A
- **Power:** 3.3V via Grove I2C
- **Operating Voltage:** 3.3V
- **Dimensions:** 32.0 x 24.0 x 8.0 mm
- **Weight:** 4.0 g

## Use Cases

- Environmental Monitoring
- Weather Station
- Smart Home
- IoT Sensor Node

## Components

- **SHT30** (Temperature/Humidity Sensor): Sensirion digital temperature (±0.2°C) and humidity (±2% RH) sensor with I2C interface at address 0x44 — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fsensirion.com%2Fproducts%2Fcatalog%2FSHT30-DIS-B&ref=openhardware.directory&product=m5stack-env-iii-unit&source=md-export)
- **QMP6988** (Pressure Sensor): High-accuracy barometric pressure sensor measuring 300-1100 hPa with ±3.9 Pa accuracy, I2C address 0x70 — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fm5stack.oss-cn-shenzhen.aliyuncs.com%2Fresource%2Fdocs%2Fdatasheet%2Funit%2Fenviii%2FQMP6988%2520Datasheet.pdf&ref=openhardware.directory&product=m5stack-env-iii-unit&source=md-export)

## Protocols

- **I2C**
- **Grove**

## Description

## Overview

The M5Stack ENV III Unit is a compact environmental sensor module combining the SHT30 temperature/humidity sensor and the QMP6988 barometric pressure sensor. It connects via I2C through a Grove (HY2.0-4P) connector and is compatible with the entire M5Stack ecosystem.

## Key Features

- **SHT30** high-precision temperature and humidity sensor
- **QMP6988** barometric pressure sensor
- I2C communication (SHT30: 0x44, QMP6988: 0x70)
- Grove (HY2.0-4P) connector with 20cm cable included
- LEGO-compatible mounting holes
- Ultra-compact: 32 x 24 x 8 mm, only 4g
- Compatible with UIFlow and Arduino

## Specifications

| Parameter | Value |
|-----------|-------|
| Temperature Range | -40 to 120°C |
| Temperature Accuracy | ±0.2°C (0-60°C) |
| Humidity Range | 10-90% RH |
| Humidity Accuracy | ±2% |
| Pressure Range | 300-1100 hPa |
| Pressure Accuracy | ±3.9 Pa |
| Interface | I2C (Grove HY2.0-4P) |
| Dimensions | 32.0 x 24.0 x 8.0 mm |
| Weight | 4.0 g |
| Operating Temp | 0-60°C |

## Where to Buy

- [OpenELAB](https://openhardware.directory/r?to=https%3A%2F%2Fopenelab.io%2Fproducts%2Fenv-iii-unit&ref=openhardware.directory&product=m5stack-env-iii-unit&source=md-export) — $8.50

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fopenelab.io%2Fproducts%2Fenv-iii-unit&ref=openhardware.directory&product=m5stack-env-iii-unit&source=md-export)

## Tags

`environmental-sensor`, `temperature`, `humidity`, `barometric-pressure`, `i2c`, `grove`, `m5stack`, `sensor-module`

## Images

![M5Stack ENV III Unit](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-env-iii-unit/1f1d861e7430.jpg)

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