Resources:BME690 Datasheet
BME690 4-in-1 Metal Environmental Probe for VOC, Temperature, Humidity, and Barometric Pressure Monitoring
The 7Semi BME690 Environmental Sensor Probe integrates Bosch Sensortec’s BME690 4-in-1 environmental sensor into a rugged metal probe for measuring temperature, relative humidity, barometric pressure, and gas resistance. The integrated gas-sensing element responds to Volatile Organic Compounds (VOCs), Volatile Sulfur Compounds (VSCs), and other gases, allowing the probe to support indoor air-quality and environmental-monitoring applications alongside conventional weather measurements.
The probe communicates through I2C at address 0x76 and includes a 1 m cable for convenient integration with remote or enclosed sensing installations. It operates from a 3.3V supply and supports configurable oversampling, IIR filtering, heater profiles, and measurement modes. Raw gas-resistance measurements can be processed using Bosch BSEC software to generate additional outputs such as Indoor Air Quality (IAQ) index, bVOC equivalent, and CO-equivalent values for supported applications.
Key Features

4-in-1 Environmental Sensing: Measures temperature, relative humidity, barometric pressure, and gas resistance
Bosch BME690 Sensor: Integrated environmental and air-quality sensing IC
VOC and VSC Response: Gas sensor responds to VOCs, VSCs, and other environmental gases
Temperature Range: -40C to +85C
Temperature Accuracy: 0.5C from 0C to +65C
Humidity Range: 0100% RH
Humidity Accuracy: 3% RH
Pressure Range: 3001100 hPa
Pressure Absolute Accuracy: 0.5 hPa
Pressure Relative Accuracy: 0.05 hPa
Digital Interface: I2C communication up to 3.4 MHz
I2C Address: 0x76
Gas Heater: Integrated programmable heater for gas sensing
Configurable Oversampling: Adjustable temperature, humidity, and pressure oversampling
IIR Filtering: Configurable digital filtering for measurement stabilisation
Measurement Modes: Supports configurable low-power and gas-sensing operating modes
Low-Power Operation: Suitable for battery-powered and continuously monitored applications
BSEC Support: Enables derived IAQ, bVOC, and CO-equivalent outputs
Probe Construction: Metal-enclosed sensing probe
Cable Length: 1 m
Microcontroller Compatibility: Suitable for ESP32, ESP8266, STM32, Raspberry Pi, Arduino Nano 33 IoT, nRF52, and other 3.3V I2C hosts

Applications

Indoor air-quality monitoring
HVAC monitoring and control
Smart home environmental sensing
Weather stations
IoT environmental nodes
Building automation
Industrial environmental monitoring
Asset and storage monitoring
Portable environmental instruments
VOC monitoring
Laboratory environmental logging
Smart ventilation systems
Battery-powered sensing systems

7semi Environment Sensors
BME690 4-in-1 Environmental Sensor Probe