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CMi-Box Gateway

CMi-Box Gateway

The CMi-Box Gateway is a compact, complete solution for remote meter reading, which uses M-Bus technology. The device consists of a meter connectivity module (MCM) which acts as a gateway for the mobile network, a wireless M-Bus receiver and a protective casing made of polycarbonate. The CMi-Box Gateway therefore covers the entire process, from reading meter data to compiling customised reports to delivering these via the mobile network.

CMi-Box M-Bus Metering Gateway for GPRS

This CMi-Box is made up of a Meter Connectivity Module and a Wireless M-Bus Receiver, mounted and connected in a protective enclosure. The CMi-Box reads Wireless M-Bus meters (alternatives for wired M-Bus meters are also available, without Wireless M-Bus Receiver), compiles meter data in customized reports and delivers it to a receiving system by a set time schedule and integration protocol via the mobile network. The product is configured and updated through text messages or HTTP, which means that settings can easily be changed without having to visit the installation site.

The CMi-Box Gateway is an end-to-end solution that combines the various functions of M-Bus metering, bringing them together in a single, compact unit. The robust, durable casing made of polycarbonate can be securely mounted on the wall using brackets. A system of coloured LED lights provides information on the current status of the CMi-Box Gateway. While the Gateway can be reset to its factory state using a push button, the settings can also be configured remotely.

  • Total: 14
  • Total: 14


Casing material:
Dimensions (w x h x d):
141 x 157 x 44 mm
Protection class:
474 g
Wall-mount with brackets

Electrical connections

Supply voltage:
230 V power supply: 3 m cable included, 24 V power supply: PCB push connector

Electrical characteristics

50/60 Hz
Power consumption (max):
<6.2 W
Power consumption (nom):
<1.2 W
Installation category:

Environmental specifications

Operating temperature:
-30 °C to +55 °C
Operating humidity:
5 % to 90 %, non-condensing
Operating altitude:
0-2000 m
Pollution degree:
Degree 2
Usage environment:
Storage temperature:
-40 °C to +85 °C

Temperature sensor, margin of error

Humidity sensor, margin of error

User interface

Green LED:
Red LED:
Yellow LED:
GSM status
Blue LED:
USB active
Push button:
Factory reset


IR, integrated M-Bus Master, Wireless M-Bus Receiver, M-Bus slave
M-Bus standard:
EN 13757 and EN 13757-4
Transparent M-Bus:
GSM and TCP/IP (software limit does not apply to transparent M-Bus mode)

Wireless M-Bus

Integrated M-Bus Master

Nominal voltage, master port:
28 VDC
M-Bus baud rate, master port:
2400 and 9600 bit/s
Maximum number of M-Bus devices (software limit):
M-Bus search modes:
Primary, secondary
Maximum cable length:
1000 m (100 nF/km, maximum 90 ohm)
Maximum number of unit loads (hardware limit):
8T/12 mA (can be extended using the CMeX10-13S Series)

Wireless M-Bus Receiver

S1, T1, C1
Maximum number of Wireless M-Bus devices:
Radio frequency band:
868 MHz
Encryption, Wireless M-Bus:
RF sensitivity:
-105 dBm
OMS compliant:

M-Bus slave interface


Real-time clock backup:
12 h
Real-time clock accuracy:
<2 s/day
Script engine:
Intelligent script engine for active content generation
Software/firmware update:
Metering reports:
HTTP, FTP, SMTP (e-mail)

Data storage (examples)

1 meter:
500 days
8 meters:
63 days
32 meters:
16 days
64 meters:
8 days
128 meters:
4 days

Mobile Network

GPRS class:
Up to 12
850/900/1800/1900 MHz

Fixed Network (Ethernet)



EN 61000-6-2, EN 61000-6-3
EN 61010-1, CAT 2

Connections and Interfaces


The CMi-Box is a combination of a meter connectivity module (MCM) as M-Bus gateway that can process and send data, and a wireless M-Bus receiver. The CMi-Box functions as an M-Bus gateway, requesting data from wireless M-Bus meters, compiling the meter data into customised reports and then delivering these to a receiving system.  The fewer meters connected to the CMi-Box, the longer the meter data can be stored. Data can also be transmitted wirelessly to the receiving system via the mobile network, which is controlled by a set time schedule and communication protocols. There is also the option to equip the M-Bus CMi-Box with a wired M-Bus master in addition to an M-Bus gateway.

The CMi-Box Gateway is ideally suited as a complete solution covering the entire remote meter reading process. The model also offers an impressive level of comfort: The product can be configured and updated remotely via SMS, HTTP or Telnet. This makes it possible to do changes to the settings of the CMi-Box Gateway without having to visit the installation site. The device’s easy-to-understand communication system uses coloured LED lights to clearly indicate the system status, making on-site device troubleshooting simple.