if the wifi goes out on my PurpleAir sensors but they are still plugged in, is the data still recorded on the SD/ anywhere else such as the data download? trying to figure out why my sensors are going offline for extended periods. Not sure if it is a wifi signal issue or a power issue. any insight on this?
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Does the sensor have an SD card? If so, you can check for gaps in the data that match the gaps in WiFi connectivity. If they match, the sensor is losing power. If they don’t match (i.e., the SD card has data from periods when the sensor was offline), it’s likely that the device is disconnecting from WiFi. This can be due to range from the router or intermittent internet.