Communication
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10.5 Radio module 868 MHz (wireless M-Bus)
The radio module 868 MHz enables the calculator to communicate with a cen-
tre (receiver) using 868 MHz radio frequency. The radio module 868 MHz
supports as well OMS
1
) as DSMR
2
) compliant data transfer.
A data transmission to an OMS radio concentrator (Smart Meter Gateway) or
the L+G mobile radio readout system Q4 is possible.
Frequency
868.95 MHz (868.90 MHz up to
869.00 MHz)
Transmission power (ERP)
min. 3.16 mW (5 dBm) up to
max. 25 mW (13.9 dBm)
Receive frequency
868.30 MHz (868.00 MHz up to
869.60 MHz)
Range*)
free field
up to 400 m
inside buildings
e.g. horizontally 30 m
Power supply
via calculator **)
Battery type D
via power supply
110 / 230 / 24 V
Standard
EN13757-2/ -4
1)
Open Metering System
2)
Dutch Smart Metering Requirements
*) Depending on the structure of the building can deviate significantly
**) Battery power supply depends on the kind of the data output. This must especially
be taken into account when upgrading an existing meter. If the battery of the meter
is of any other type, it must be replaced by a battery of type D 11-years. Meters
that are supplied with a radio module from the factory are already equipped with
the correct battery.
