M-Bus Gateway

The smart-me M-Bus Gateway reads all energy meters with the M-Bus interface according to EN 13757-2, -3. Since it uses the existing WLAN network, no additional hardware needs to be installed. The meter data for the various energy sources (water, heat, gas, temperature) are transferred directly to the smart-me cloud and can be used in the smart-me energy management system.


Technical Data

Operating voltage 100 – 240 VAC

Number of M-Bus slaves 50 standard loads

M-Bus baud rate 300, 2400, 9600 (automatic scan and detection)

Assembly DIN-rail

Size 2 modules, 36 × 90 mm

Interface WiFi, M-Bus

Data storage 6000 readouts

Firmware Update Available online

Galvanic isolation yes

Temperature range from −25 to 55 °C

Amount of data <= 1KB per device per readout


Attention: It is absolutely essential that the devices are online before the tenants move in. This is the only way to evaluate the counter readings over the time axis.

Hardware installation steps:

The commissioning of the heat and water meters will be carried out by the supplier (e.g. Neovac, Ista, GWF, Techem etc.). These companies usually have their own M-Bus master connected in the technical room so that they can check whether the meters are arriving on the M-Bus.

Afterwards, a commissioning protocol is created and then our M-Bus gateway is reconnected.

With the documents, the respective meters can then be added to the correct user units on the smart-me cloud and the configuration can be completed.

The following information will be needed:

Important: The secondary address must be unique per smart-me account and the combination of the last 4 numbers must be unique to the account in case of heat/cold-combination counters. The easiest way is to use the device serial number.

Result of the automatic search 

Automatic counter creation after search  (takes some minutes)

Compatible Electric, Water, Heat and Gas Meters

The M-Bus Gateway reads over 1000 meter types from different manufacturers. Below you will find a non-exclusive list of compatible device manufacturers.

Note: Pay explicit attention to how the meter is declared. It can be declared as a heat meter, heat/cold meter, water meter or electricity meter. Combination meters that are not declared as heat/cold meters may not function properly in combination or may only function as heat meters.

Kompatibilitätsliste M-Bus_Gateway

Do you also belong to this list? If your product supports the M-Bus standard EN 13757-2, -3 (previously EN 1434-3), we will be happy to list you among the compatible device manufacturers as well! Please contact us. 

Aquametro AG

Ringstrasse 75
CH-4106 Therwil
+41 61 725 11 22

David Schittly, Projekleiter
+ 41 61 725 15 19

GWF MessSysteme AG

Obergrundstrasse 119
CH-6005 Luzern
+41 41 319 50 50

Laila Gschwind, Leiterin Sales Office

+41 41 319 52 18


ista swiss ag

Zofingerstrasse 61
CH-4665 Oftringen
+41 62 746 99 00

André Huber, Teamleiter / TechnikCenter
+41 62 746 99 10


Eichaustrasse 1
CH-9463 Oberriet
+41 58 715 50 50

Heinz Marti, Bereichsleiter Technik/Qualitätssicherung
+41 58 715 56 90

Optec AG

Guyer-Zeller-Strasse 14
CH-8620 Wetzikon ZH
+41 44 933 07 70

Burak Nurten, Stv. Leiter Innendienst
+41 44 933 07 70

Rapp Enserv AG

Hochstrasse 100
CH-4018 Basel
+41 58 595 77 77

Christian Regitz, Bereichsleiter Abrechnungsdienstleistungen
+41 58 595 76 12

Techem (Schweiz) AG

Steinackerstr. 55
CH-8902 Urdorf
+41 43 455 65 00

Olivier Villiger, Produkt Management
+41 43 455 65 16

Brunata AG

Althardstrasse 10
CH-8105 Regensdorf

Alex Nanzer, CEO
+41 41 669 10 10

BELIMO Automation AG

Brunnenbachstrasse 1 

CH-8340 Hinwil

Measuremente and Wiring

Dimensions [mm]

Wiring diagram

M-Bus installation instructions

This is how the installation succeeds in no time at all

Caution: Do not apply voltage to the smart-me M-Bus gateway. The operating voltage may only be switched on by a smart-me partner.

Recommended combination of cable routing
We recommend dividing the routing of the bus lines into risers and stubs:

Regulations for cable and electrical installation
Generally, the SEV regulations apply. The bus cables should be as short as possible.

The following cable types are recommended:

Riser cable: TT2×1.5 mm2 (preferred), Maximum cable length = 1000 m
Stub cable: U72 1×4×0.8 mm2 (preferred), maximum cable length = 50 m

Note: All branch, connection and joint points must be sealable. Sealing is carried out by a smart-me partner.

Suggested materials


Cable connections:

Technical Description M-Bus Protocol

The smart-me cloud shows all meter data that is send via M-Bus. smart-me adheres to the EN 13757-3 standard. Some examples for mapping the M-Bus telegram:

Examples: smart-me M-BUS OBIS Mapping

Downloads and certificate of conformity

Here you will find data sheets, quick starter guides and other documentation for this product.