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InfluxDB
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The smartmeters installed by Waterlink in Flanders are Kamstrup Multical 21 and they broadcast every 96 seconds a wireless M-BUS message (on 868 MHz) with the latest data. It's easy enough to receive the messages thanks to wmbusmeters (and those of my neighbours, as well as messages from gas meters) but of course (and thankfully) they are encrypted. Users in Norway (or Sweden? I'm not sure anymore) seem to receive the ".kem" file corresponding to their meter that allows them to decrypt messages.
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