Mastak Modular Air Quality Monitor Kit Supports CO2, Dust, Formaldehyde, Ozone and other Sensor Modules

The Mastak Indoor Air Quality Monitor Kit

Medium Systems Limited, a UK company has released the Mastak, SoMs designed in a mechanical range that allows for indoor air quality monitoring, with a data IoT cloud service, and communications that include NB-IoT, 5G, WiFi, BLE, and LTE-M.  The system is a new addition to the air monitoring market place. There have been reports on other air quality monitors in past articles that covered quick start and user experience with Sonoff SC WiFi, vThings WiFi CO2 Monitor, and the ANAVI Gas Detector.

Mastak indoor air quality monitoring kit

The Specs

The ecological modules are all compatible and contain processor, peripherals and the sensors for data monitoring and collection, as well as the necessary power electronics. The modules were designed too and allow the user to arrange the systems into custom arrangements and place in unique form factors. There are a number of options also, for even further expandability and functionality. The systems come with the following specs.


    • ESP 32 based
    • 3G, NB-IoT, LoRa, BLE, Wi-Fi as communications methods
    • Set of important sensors
    • Low cost
    • Low power
    • High availability & reliability


    • 4x GPIO
    • 1x I2C
    • 1x SPI


    • ThingSpeak – The IoT Platform with MATLAB Analytics
    • ThingsBoard open IoT Platform
    • Mobile Apps (Android 7.0 and up) for settings of the access wi-fi point service and the frequency of sending data


There are several packages and optional arrangements available and there is a  screen available for data and GUI presentations. The system is fully customizable from the type of sensors to what modules can be ordered with the units. The base package carries some very good quality and functional sensors for general purpose monitoring in any way the user would like. The following comes in the package –

  • Block with GSM slot and following sensors:
    • Telaire T6703 – CO2
    • BOSCH BME680 – TVOC (Total Volatile Organic Compounds), Temperature. Pressure, and Humidity
    • TI OPT3001 – Light
    • AD DMP401 – Noise
  • Block For Battery
  • Durable Plastic Toolbox Case


The base system starts at $229.00, with optional E-Ink Screen ($49.00), Formaldehyde Sensor or Ozone Sensor ($30.00 each – these sensors are not compatible with each other) and a PM1.0, PM2.5, PM5.0 and PM10 Dust Sensor ($47.00) shipping to the USA starts at $20.00. Shipping to other countries was not indicated.


A Quick Note About the Screen

The E-Ink screen is 4.2-inch 400 x 300 px resolution with an embedded controller. Some of the advantages of the screen are ultra-low-power (basically only needs power to refresh) 170ᵒ viewable angles and no backlight.

For more information and to purchase the Mastak kit, see the Tindie product page, that has the most information on the system.

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4 years ago

That particle sensor looks incredibly similar to PLANTOWER PM2.5 PMS7003.

There seem to exist other clones as well.

Jean-Luc Aufranc (CNXSoft)

That’s because it’s indeed “Plantover PMS7003/G7” as per Tindie listing.

4 years ago

I like the modularity but not the asking price.

For usd 270 you can buy an Airvisual Pro that has a nice LCD and also a battery. That has no VOC but that is the least important so not a big loss.

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