Introduction Wireless-M-Bus (EN13757-4:2014-2) is integrated in a lot of modern smart meters. My water utility company replaced the old analog meter with a Kamstrup Multical 21 water meter. It includes a wM-Bus module and transmits data every 16 seconds.
Software I’ll be using the ‘wmbusmeters’ project to receive the meter data. The package is included in latest Fedora Linux, together with rtl-sdr, so installation was quick and easy.
Hardware There are different hardware options to receive wM-Bus signals on a linux based computer.