M5Stack ENV Pro Unit Temperature-Humidity-Pressure and Gas BME688

The M5Stack ENV Pro Unit combines temperature, humidity, air pressure, and gas detection based on the Bosch BME688 in a compact case. Via I2C, you can quickly integrate the unit into Arduino or UiFlow to obtain immediately usable environmental data. The integrated gas sensor enables VOC detection and air quality assessments, which can be further processed into IAQ or CO₂ equivalent evaluations, for example. Thanks to its high sensitivity, even small changes in air quality can be reliably detected. Precise temperature and pressure measurements provide stable data for weather, climate, and altitude calculations. The humidity section responds quickly and captures the entire range from 0 to 100% RH. The unit format with HY2.0-4P connector makes it particularly easy to install in panels, housings, and mobile setups. The low power requirement is suitable for continuous operation or battery-powered projects. Example codes and libraries significantly shorten development time. In total, you receive a versatile, space-saving measurement platform for smart home, research, education, and prototyping.

Features:

• Quadruple sensing: Combines temperature, relative humidity, air pressure, and gas resistance for comprehensive environmental analysis.
• Gas detection: BME688 detects VOCs and supports air quality-related evaluations with standardizable sampling rates.
• Fast integration: I2C interface with typical address 0x77 enables easy integration into existing systems.
• High accuracy: Temperature and humidity measurements with minimal deviations provide reliable, reproducible results.
• Pressure stability: Low noise values and defined temperature coefficient ensure precise altitude and trend analyses.
• Responsive: Short response times of the humidity section capture climate changes promptly.
• Energy-efficient: Optimized measurement cycles reduce consumption for 24/7 monitoring or mobile applications.
• Compact: Small unit housing saves space and fits ideally into control panels and educational setups.
• Software support: Arduino and UiFlow examples facilitate the start and speed up implementation.
• Versatile: Suitable for indoor monitoring, weather stations, automations, and data logging.

Application examples:

• Indoor air quality monitor with automatic ventilation control.
• Weather and climate dashboard with trend recording and alarms.
• Smart home automations based on humidity and VOC thresholds.
• Mobile data logger for educational and research projects.
• Workshop or laboratory early warning system for air quality changes.

Documentation:

• M5Stack Wiki
• Official M5Stack Forum

Technical Data:

• Manufacturer: M5Stack
• Manufacturer SKU: U169
• Sensor platform: Bosch BME688 (temperature, humidity, pressure, gas/VOC)
• Interface: I2C, typical address 0x77
• Gas sensor: Standard scan speed 10.8 s
• Humidity sensor: Response time (τ 0–63%) 8 s; accuracy ±3% RH; measurement range 0–100% RH
• Air pressure sensor: Noise value 0.12 Pa (≈ 1.7 cm height); temperature coefficient ±1.3 Pa/K (≈ ±10.9 cm per 1 °C); measurement range 300–1100 hPa
• Temperature sensor: Absolute accuracy ±0.5 °C (0–65 °C); measurement range −40 … +85 °C
• Power supply: via unit port (HY2.0-4P), 3.3 V logic
• Supported platforms: Arduino, UiFlow
• Dimensions: 32 × 24 × 8 mm
• Weight: 9 g

Scope of delivery:

• 1× M5Stack ENV Pro Unit temperature-humidity-air pressure and gas BME688
• 1× HY2.0-4P cable 20 cm