MoreSense
Smart indoor air quality monitors

MoreSense MS-04 LED matrix CO₂ display – €149


A CO₂ meter for large rooms

There are many kinds of CO₂ meters, but one in the form of a large LED matrix display with 2,048 (64 × 32) RGB LEDs is exceptional. With this "CO₂ clock" your guests, pupils or customers can see at a glance how good the air quality is. Ideal for large spaces such as shops, schools, gyms and classrooms.

Besides showing CO₂, this WiFi sensor also measures temperature, humidity, air pressure, IAQ (Indoor Air Quality) and VOC (volatile substances such as formaldehyde, cleaning products, alcohol, glue, paint and varnish). And there's much more: readings are stored in a log file that you can easily open in Excel to follow trends and take action. You can even add your own screens and scrolling messages using simple MQTT or REST commands.

Smart home and ventilation

Besides reading the values directly on the display, the sensor can be connected to an MQTT server via WiFi. This way it integrates into many home automation systems – for example to switch on the ventilation when CO₂ levels get too high. It also connects directly to Homey (via the free HomeyDuino app), and all readings are available via a REST API.

The sensor also has a built-in web server that shows the readings on clear gauges. Via the web server (accessible from your smartphone, tablet or PC) you can adjust all settings, download the log file (CSV/Excel) and install firmware updates "over the air" (OTA).

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 a Bosch BME680, known for its high accuracy, especially for VOC measurements.

Features

  • Top-quality SenseAir S8 CO₂ sensor (0–10,000 ppm, accuracy ± 40 ppm ± 3%)
  • Top-quality Bosch BME680 sensor: °C, %RH, hPa, IAQ and VOC – plus a clock
  • REST API and MQTT
  • Your own values, scrolling messages and alarms via MQTT or REST
  • Automatic calibration, or manual calibration based on outdoor air
  • Meets the requirements of the Dutch Building Decree (Bouwbesluit): mains-powered, automatic self-calibration and an adjustable alarm
  • Works stand-alone, or connected to your own network via WiFi
  • No subscription needed – everything stays under your own control
  • Acoustic alarm when a user-defined CO₂ threshold is exceeded, with adjustable snooze period
  • Readings available via smartphone, tablet or PC (in your browser)
  • Readings automatically stored in a log file (CSV/Excel), easy to download from the built-in web server
  • Built-in web server for settings, log file download, readings and firmware updates
  • Free-standing or wall-mounted
  • User manual: see Downloads
  • 1-year warranty (under normal use)

Connects with

  • Homey home automation controller
  • 230 V WiFi smart plug (e.g. to switch a ventilation system)
  • MoreSense server via MQTT for data storage, dashboards and alert messages
  • Any MQTT broker

Dimensions and power

  • Housing (h × w × d): 256 × 128 × 38 mm
  • Display: 64 × 32 colour LEDs (dimmable and can be switched off)
  • Power supply: 9 V / 2 A adapter with 1.8-metre cable
  • Consumption: approx. 500 mA