{"product_id":"e1-pro-bme688-add-on-luchtkwaliteit","title":"Sensy-One E1 Pro BME688 Add-on – IAQ, VOC \u0026 eCO₂ Sensor","description":"\u003cdiv class=\"product-description\"\u003e\n\n\u003ch2\u003e 🌬️ One sensor, 7 measurements.\u003c\/h2\u003e\n\n\u003cp\u003e Air quality is more than just CO₂. The \u003cstrong\u003eSensy-One E1 Pro BME688 Add-on\u003c\/strong\u003e provides a complete picture of your indoor air: from volatile organic compounds (VOCs) and estimated CO₂ levels to air pressure, temperature, and humidity—all processed via the BME688 chip's AI-powered gas detection. This optional expansion for the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/e1-pro-multi-sense-mmwave-sensor-home-assistant\"\u003eE1 Pro Multi Sense sensor\u003c\/a\u003e is ideal if you want a broad and intelligent overview of your living environment.\u003c\/p\u003e\n\n \u003cp\u003eThe BME688 estimates CO₂ levels based on VOC activity (eCO₂). This isn't a direct measurement like the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/sensy-co2-add-on\"\u003eSCD40 CO₂ add-on\u003c\/a\u003e , but it offers valuable insights into trends and ventilation effectiveness – perfect for comfort automation and air quality monitoring. All data is \u003cstrong\u003eprocessed entirely locally\u003c\/strong\u003e via ESPHome and Home Assistant, without the cloud and without data leaks.\u003c\/p\u003e\n\n\u003cp\u003e ⚠️ \u003cstrong\u003ePlease note:\u003c\/strong\u003e Only \u003cstrong\u003eone air quality sensor\u003c\/strong\u003e can be installed on the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/e1-pro-multi-sense-mmwave-sensor-home-assistant\"\u003eE1 Pro\u003c\/a\u003e . Choose between the BME688 (wide-range air quality) or the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/sensy-co2-add-on\"\u003eSCD40 CO₂ add-on\u003c\/a\u003e (accurate CO₂ measurement). Read the differences below to make the best choice.\u003c\/p\u003e\n\n\u003ch2\u003e ✅ What does the BME688 Add-on Measure?\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e \n\u003cstrong\u003eIAQ (Indoor Air Quality)\u003c\/strong\u003e – Combined air quality score based on all measured parameters\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eeVOC (Estimated Volatile Organic Compounds)\u003c\/strong\u003e – Detects paints, cleaning products, cooking fumes and other contaminants\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eeCO₂ (estimated CO₂)\u003c\/strong\u003e – CO₂ estimation based on VOC activity; useful for trends and ventilation insights\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eTemperature\u003c\/strong\u003e – Accurate internal temperature for automation\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eHumidity\u003c\/strong\u003e – Relative humidity for comfort and mold prevention\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eAir Pressure\u003c\/strong\u003e – Barometric Pressure for Weather Patterns and Environmental Monitoring\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eGas Resistance\u003c\/strong\u003e – Detects changes in air quality for early warning\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e 🆚 BME688 vs. SCD40 – Which One Will You Choose?\u003c\/h2\u003e\n\n\u003ctable\u003e\n\n\u003cthead\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Characteristic\u003c\/th\u003e\n\n\u003cth\u003e BME688 Add-on\u003c\/th\u003e\n\n\u003cth\u003e \u003ca href=\"https:\/\/slimhuisje.nl\/products\/sensy-co2-add-on\"\u003eSCD40 CO₂ Add-on\u003c\/a\u003e\n\u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eCO₂ measurement\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e eCO₂ (estimated via VOC)\u003c\/td\u003e\n\n\u003ctd\u003e ✅ Real CO₂ via NDIR technology\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003ctd\u003e\u003cstrong\u003eCO₂ accuracy\u003c\/strong\u003e\u003c\/td\u003e\n\n\u003ctd\u003e Trend-based\u003c\/td\u003e\n\n\u003ctd\u003e High accuracy, stable\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eVOC detection\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e ✅ Yes\u003c\/td\u003e\n\n\u003ctd\u003e ❌ No\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eIAQ score\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e ✅ Yes\u003c\/td\u003e\n\n\u003ctd\u003e ❌ No\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eAir pressure\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e ✅ Yes\u003c\/td\u003e\n\n\u003ctd\u003e ❌ No\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eGas resistance\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e ✅ Yes\u003c\/td\u003e\n\n\u003ctd\u003e ❌ No\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eTemperature \u0026amp; humidity\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e ✅ Yes\u003c\/td\u003e\n\n\u003ctd\u003e ✅ Yes\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eMeasurement range CO₂\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e Estimated\u003c\/td\u003e\n\n\u003ctd\u003e Up to 40,000 ppm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003e \u003cstrong\u003eIdeal for\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd\u003e Broad air quality overview, trend analysis\u003c\/td\u003e\n\n\u003ctd\u003e Ventilation management, precision CO₂\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003cp\u003e \u003cstrong\u003eChoose the BME688\u003c\/strong\u003e if you want a comprehensive overview of the air quality in your home, including VOC monitoring, comfort monitoring, and estimated CO₂ trends.\u003c\/p\u003e\n\n\u003cp\u003e \u003cstrong\u003eChoose the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/sensy-co2-add-on\"\u003eSCD40\u003c\/a\u003e\u003c\/strong\u003e if you need accurate CO₂ measurement for ventilation control, occupancy detection, or environments where precise CO₂ data is important.\u003c\/p\u003e\n\n\u003ch2\u003e 🏠 Practical Example: Smart Ventilation \u0026amp; Air Quality Automation\u003c\/h2\u003e\n\n\u003col\u003e\n\n\u003cli\u003e The BME688 detects an increase in VOC levels and gas resistance during cooking.\u003c\/li\u003e\n\n \u003cli\u003eThe IAQ score falls below the set threshold value.\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003ca href=\"https:\/\/slimhuisje.nl\/products\/e1-pro-multi-sense-mmwave-sensor-home-assistant\"\u003eHome Assistant\u003c\/a\u003e automatically activates the extractor hood at a higher setting.\u003c\/li\u003e\n\n\u003cli\u003e Once the IAQ score recovers, the hood switches back to standby.\u003c\/li\u003e\n\n\u003cli\u003e The Home Assistant dashboard provides real-time VOC trends, eCO₂ estimates, and IAQ scores for each room.\u003c\/li\u003e\n\n\n\u003c\/ol\u003e\n\n\u003ch2\u003e ⚙️ Technical Specifications \u003c\/h2\u003e\n\n\u003ctable style=\"width: 100%; height: 195.938px;\"\u003e\n\n\u003cthead\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003cth style=\"width: 26.8786%; height: 19.5938px;\"\u003e Specification\u003c\/th\u003e\n\n\u003cth style=\"width: 70.468%; height: 19.5938px;\"\u003e Value \u003c\/th\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/thead\u003e\n\n\u003ctbody\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 19.5938px;\"\u003e \u003cstrong\u003eSensor chip\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"width: 70.468%; height: 19.5938px;\"\u003e Bosch BME688 \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 19.5938px;\"\u003e \u003cstrong\u003eCompatible with\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"width: 70.468%; height: 19.5938px;\"\u003e \u003ca href=\"https:\/\/slimhuisje.nl\/products\/e1-pro-multi-sense-mmwave-sensor-home-assistant\"\u003eE1 Pro Multi Sense\u003c\/a\u003e \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 19.5938px;\"\u003e \u003cstrong\u003eMeasurement parameters\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"width: 70.468%; height: 19.5938px;\"\u003e IAQ, eVOC, eCO₂, temperature, humidity, air pressure, gas resistance \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 19.5938px;\"\u003e \u003cstrong\u003eCO₂ method\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"width: 70.468%; height: 19.5938px;\"\u003e Estimated via VOC activity (eCO₂) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 19.5938px;\"\u003e \u003cstrong\u003eAI processing\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"width: 70.468%; height: 19.5938px;\"\u003e ✅ Yes (Bosch BSEC AI algorithm) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 19.5938px;\"\u003e \u003cstrong\u003eIntegration\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"width: 70.468%; height: 19.5938px;\"\u003e ESPHome + Home Assistant (fully local) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 39.1875px;\"\u003e \u003cstrong\u003eMax. add-ons per E1 Pro\u003c\/strong\u003e\n\u003c\/td\u003e\n\n\u003ctd style=\"width: 70.468%; height: 39.1875px;\"\u003e 1 air quality sensor (BME688 or SCD40) \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\n\u003ctd style=\"width: 26.8786%; height: 19.5938px;\"\u003e \u003cstrong\u003eInstallation\u003c\/strong\u003e\n\u003c\/td\u003e\n\n \u003ctd style=\"width: 70.468%; height: 19.5938px;\"\u003ePlug \u0026amp; Play\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\u003ch2\u003e ⚠️ Points of attention\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eOnly one air quality sensor per E1 Pro\u003c\/strong\u003e – Choose between the BME688 or the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/sensy-co2-add-on\"\u003eSCD40 CO₂ add-on\u003c\/a\u003e ; installing both at the same time is not possible\u003c\/li\u003e\n\n\u003cli\u003e\n\n \u003cstrong\u003eeCO₂ is an estimate\u003c\/strong\u003e – No direct CO₂ measurement; for precise CO₂ values ​​the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/sensy-co2-add-on\"\u003eSCD40\u003c\/a\u003e is the right choice\u003c\/li\u003e\n\n\u003cli\u003e This is an \u003cstrong\u003eaccessory\u003c\/strong\u003e – the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/e1-pro-multi-sense-mmwave-sensor-home-assistant\"\u003eE1 Pro Multi Sense sensor\u003c\/a\u003e is sold separately and not included.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e ❓ Frequently Asked Questions (FAQ)\u003c\/h2\u003e\n\n\u003cdl\u003e\n\n\u003cdt\u003e \u003cstrong\u003eWhat is the difference between eCO₂ and real CO₂ measurement?\u003c\/strong\u003e\n\u003c\/dt\u003e\n\n \u003cdd\u003eThe BME688 estimates CO₂ levels based on measured VOC activity and gas resistance (eCO₂). This provides valuable trend information about ventilation and air quality, but is not a direct measurement. For accurate CO₂ measurements, the \u003ca href=\"https:\/\/slimhuisje.nl\/products\/sensy-co2-add-on\"\u003eSCD40 CO₂ add-on\u003c\/a\u003e is the better choice.\u003c\/dd\u003e\n\n\u003cdt\u003e \u003cstrong\u003eCan I install both the BME688 and the SCD40?\u003c\/strong\u003e\n\u003c\/dt\u003e\n\n\u003cdd\u003e No. The \u003ca href=\"https:\/\/slimhuisje.nl\/products\/e1-pro-multi-sense-mmwave-sensor-home-assistant\"\u003eE1 Pro\u003c\/a\u003e can only accommodate one air quality sensor. Want both? Then check out the S1 Pro – it has the BME688 built in as standard and the option to add the SCD40.\u003c\/dd\u003e\n\n\u003cdt\u003e \u003cstrong\u003eDoes the BME688 work completely locally?\u003c\/strong\u003e\n\u003c\/dt\u003e\n\n\u003cdd\u003e Yes. All data is processed locally via ESPHome and Home Assistant. No data is sent to the cloud.\u003c\/dd\u003e\n\n\u003cdt\u003e \u003cstrong\u003eWhich entities are created in Home Assistant?\u003c\/strong\u003e\n\u003c\/dt\u003e\n\n \u003cdd\u003eESPHome creates entities for IAQ score, eVOC, eCO₂, temperature, humidity, air pressure, and gas resistance. All these values ​​can be used directly in automations and dashboards.\u003c\/dd\u003e\n\n\n\u003c\/dl\u003e\n\n\u003cp\u003e ✅ \u003cstrong\u003eslimhuisje.nl – your technology partner for smart homes, we support you with every smart home adventure!\u003c\/strong\u003e\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"Sensy-One","offers":[{"title":"Default Title","offer_id":52683649450326,"sku":"E1-PRO-BME688","price":19.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/5921\/3398\/files\/E1_Pro_BME688_Add-on_home_view.webp?v=1771893432","url":"https:\/\/slimhuisje.nl\/en\/products\/e1-pro-bme688-add-on-luchtkwaliteit","provider":"slimhuisje.nl","version":"1.0","type":"link"}