@glenn-mckechnie hi Glenn, thanks for the interesting post and sorry for my delayed reply,

This limitation exists only on the A3 with Wifi and is due to the Wifi Module used, that is somewhat limited in terms of bandwidth. The server upload has priority, but polling can sometimes impact this as well, resulting in the watchdog being triggered.

The best solution here is to change your script to use the uRADMonitor Server API . That is the recommended way to go, especially since there is an additional calibration layer implemented on the server side only. the VOC AQI and PM1 and PM10 readings are only available in the server output too.

You can find all information on the API , including examples on http://www.uradmonitor.com/dashboard

The local JSON was only offered as a bonus, to the internal webserver functionality that was needed to offer a way to configure the A3 units with Wifi for internet access.

Let me know if there is anything else I can help you with.