Remote I/O - M-Bus
The M-Bus (Meter-Bus) is a European standard for remote reading of gas-meter, heat-meter or other electricity meters. This bus fulfills the special requirements of remotely powered or battery driven systems, including consumer utility meters, various sensors and actuators. When interrogated into a network system, the meters deliver the measured data to a common master, which can, for example, be a hand-held computer, connected at periodic intervals to read all utility meters of a building. An alternative method of collecting data centrally is to transmit meter readings via a modem.