MoreSense MS-02 CO₂ sensor – €99
The MS-02 is a versatile WiFi sensor for measuring CO₂. For €30 extra it can be extended with a Bosch BME680 module for temperature, humidity, air pressure, IAQ (Indoor Air Quality) and VOC – volatile organic compounds such as formaldehyde, cleaning products, alcohol, glue, paint and varnish.
Readings are shown on the display both as an "analogue" gauge and digitally. The sensor can also be connected to an MQTT server via WiFi, so it integrates into many home automation systems – for example to switch on the ventilation when CO₂ levels get too high. It connects directly to Home Assistant, Domoticz and Homey (via HomeyDuino).
Built-in web server
The sensor has a built-in web server that shows the readings on clear gauges – on a large screen you can display the values in bigger rooms too. Via the web server (accessible from your smartphone, tablet or PC) you can adjust all settings, and firmware updates are carried out user-friendly "over the air" (OTA).
Data logging
The MS-02 stores its readings in a log file (CSV/Excel format), which you can download directly from the web server and open in Excel or any other spreadsheet program.
High-quality components
The sensor is built from high-quality components, including a SenseAir S8 CO₂ sensor. SenseAir products, developed in Sweden, are among the best available on the market.
The other values come from the optional Bosch BME680, which is known for its high accuracy, especially for VOC measurements.
Particulate matter extension
The MS-02 can also be extended with a Sensirion SPS30 particulate matter sensor, measuring PM1.0, PM2.5, PM4.0 and PM10. This is not a cheap sensor with a limited lifespan, but a solid Swiss sensor that lasts at least 8 years. Besides its quality, it is praised for reliable PM2.5 readings and its insensitivity to humidity. The sensor automatically blows itself clean every few days, so measurements stay reliable.
The particulate matter monitor costs €109 as a stand-alone version (without CO₂) or €69 as an extension to the CO₂ meter. The stand-alone version can in turn be extended with the BME680 module and/or the SenseAir CO₂ sensor.
Features and specifications
The sensor is powered by a standard 5 V USB adapter and a 2-metre USB-C cable (both included). You can also use a power bank (not included), so you don't depend on a power outlet.
- Attractively priced, especially given the many possibilities
- Easy integration with Home Assistant, Domoticz and Homey
- Telephone support if needed
- Top-quality, self-calibrating SenseAir S8 CO₂ sensor
- 1-year warranty (under normal use)
- Values directly readable on the display – WiFi connection not required
- Can be used stand-alone
- WiFi connection to your own network – no subscription and no app required, everything stays under your control
- Can be connected to an MQTT server and to a Homey controller
- Built-in web server for settings, log file download, readings and firmware updates
- Values readable via smartphone, tablet or PC (in your browser)
- Values are automatically recorded in a log file (CSV/Excel)
- Housing (h × w × d): 116 × 84 × 40 mm, 3D-printed
- Display (l × w): 25 × 15 mm, dimmable and can be switched off
- Free-standing or wall-mounted
- Optional 18650 2000 mAh rechargeable Li-ion battery (+ €20)
- Optional Sensirion SPS30 particulate matter sensor (+ €69)
- Automatic CO₂ calibration (RIVM requirement, can be disabled)
- CO₂ sensor can be calibrated by the user (based on outdoor air, 400 ppm)
- CO₂ alarm at > 1,500 ppm (if enabled)
- CO₂ accuracy ± 70 ppm ± 3% at 5–30 °C, 20–70% RH
- Smoke alarm (IAQ > 375)
- With port forwarding, the sensor can be read live from anywhere in the world
- User manual available (see Downloads)
- Delivery time: by arrangement
- Delivery: collection or by PostNL (+ €6.95)
- Custom work (sensors / IoT) possible
Gauges and time registration are only available when the sensor can connect to the internet via WiFi. Please note: from firmware version 1.7.1 the e-mail option has been removed.
