When to replace your sensor modules (Sensedge)

Thanks to Sensedge's signature modular design, it is easy to recalibrate your Sensedge device when your sensors are due for a tune-up: simply order your new sensor modules from our team (or our distribution partner in your area) and swap out the sensor modules.

There are a couple of ways to tell when your device is ready for a sensor module replacement:

  1. General Timeline
    On average, our KM-100 and KM-103 sensor modules will run for 1.5 - 2 years (or 18 - 24 months). This calculation is based on numerous factors, such as pollutant exposure and overall runtime -- where the longer the sensor is running and the amount of the pollutant it is measuring it is exposed to will play big roles in how long the sensor will last.
  2. Healthy Building Requirements
    On the other hand, most healthy building certifications (such as WELL and RESET) have a requirement for sensor recalibration or replacement every 12 months. In the case of our Sensedge air quality monitor, this would take the form of doing a sensor module replacement every 12 months.
  3. Sensor Health Percentage
    On the Sensedge, as well as the Kaiterra Web App, we are able to calculate the general health of your sensors based on their runtime and overall exposure to its measured pollutant. When this sensor health percentage (which is found under the Settings --> Sensors screen of the Sensedge, or under "More Details" on the Kaiterra Web App) is under 10%, that is when you should get in touch with our team or your distribution partner and consider purchasing a new set of sensors for your device.

Important things to note:

  • The KM-100 and KM-103 sensor modules will continue to work, even if their sensor health is low (and even at 0%). It is when the sensor health is at 0% that the sensor can no longer be guaranteed to be within its accuracy specifications, but it will not prevent the device from running.
  • The KM-100 and KM-103 sensor modules will likely be worn out at different intervals. Unless you are going for a healthy building certification (which requires annual replacement), your sensor modules will often lose sensor health at a different rate and might need to be replaced at different times.

    For example, different parts of the world deal with heavier levels of PM in comparison to TVOCs (or vice versa), or the environment the devices are installed in may also experience different levels of these pollutants, which would lead to their sensor modules being worn out at different rates.

    In these cases, it is up to you if you would like to replace your sensor modules separately -- but for ease of maintenance, it is recommended to switch out your sensor modules simultaneously, regardless of what the sensor health % is.