WMBus


 * European standard EN 13757-4:2005 "Communication system for meters and remote reading of meters”.
 * http://www.silabs.com/Marcom%20Documents/Resources/wireless-m-bus-quick-start-guide.pdf
 * https://en.wikipedia.org/wiki/Meter-Bus
 * http://www.ti.com/tool/wmbus
 * http://www.ti.com/lit/an/swra234a/swra234a.pdf
 * http://www.emcu.it/WirelessMBUS/Wireless_M-BUS_Solutions_and_more.pdf
 * https://www.semtech.com/Press-Releases/2015/Semtech-Extends-Smart-Metering-Reach-with-WMBus-over-LoRa-Platform.html