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CMi-Box Wireless M-Bus Receiver

This CMi-Box is made up of a Wireless M-Bus Receiver mounted in a protective enclosure. The product can be used with a Gateway from Elvaco's CMe Series to enable communication with Wireless M-Bus meters. CMi-Box handles up to 800 meters, each one secured by individual encryption keys.

The wireless M-Bus Receiver comes in different variants that differ in terms of their voltage (24 V or 230 V) and the position of the antenna for wireless data transmission. In addition, customers can choose between conventional models and Enhanced devices. 

The CMi-Box’s robust polycarbonate casing provides reliable protection for the M-Bus Receiver. The product is directly mounted on the wall using special brackets. The CMi-Box Receiver has interfaces to a wireless M-Bus receiver and M-Bus slaves.

  • Total: 8
  • Total: 8


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

Electrical connections

Supply voltage:
230 V power supply: 3 m cable included, 24 V power supply: PCB push connector
M-Bus slave port:
Screw terminal. Cable 0.5-2.5 mm², 0.5 Nm tightening torque

Electrical characteristics

Nominal voltage:
230 V power supply: 100-240 VAC, 24 V power supply: 12-35 VAC or 12-48 VDC
50/60 Hz
Power consumption (nom):
<0.2 W
Installation category:

Environmental specifications

Operating temperature:
-30 °C to +55 °C
Operating humidity:
5 % to 90 %, non-condensing
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


Wireless M-Bus Receiver, M-Bus slave
M-Bus standard:
EN 13757 and EN 13757-4

Wireless M-Bus

Integrated M-Bus Master

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

M-Bus baud rate, slave port:
300 and 2400 bit/s
Nominal voltage, slave port:
21-42 VDC
Power consumption:
1T/1.5 mA
Addressing modes:
Primary, secondary
Default address:


Data storage (examples)

Mobile Network

Fixed Network (Ethernet)



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

Connections and Interfaces


For downloads, please visit our support site at: https://support.elvaco.com

Our website has gathered all resources you need to update, tune and troubleshoot your installations, such as:

  • Latest software versions
  • FAQs
  • Guides
  • In-depth technical information
  • Support forum

Elvaco’s powerful CMi-Box Receiver can read data from up to 800 wireless M-Bus meters within the remote meter reading infrastructure. The device uses a radio signal that does not require cables to be laid for remote meter reading. This greatly simplifies the installation process, reducing installation time and costs. 

The CMi-Box Receiver works in conjunction with a gateway from Elvaco’s CMe series, such as the CMe2100 or CMe3100model. This combination makes it possible to process the recipient’s data. The security of the transmitted meter data is guaranteed thanks to individual encryption keys. 

The wireless M-Bus Receiver is housed in a high-quality, durable casing made of polycarbonate. This is permanently mounted on the wall in the desired position. Interfaces to a wireless M-Bus receiver and the M-Bus meters enable flawless device communication in the metering infrastructure.

Numerous product variants with different voltage and antenna options ensure that you always have the right CMi-Box Receiver solution for your individual use case.