4
1.2 Restrictions
d
PROHIBITED
– Do not modify and/or attempt to
repair the product. All repairs must
be performed exclusively by au-
thorised personnel.
– Do not leave the device exposed to
atmospheric agents.
– Do not place the device near to heat
sources or expose it to direct sun-
light.
– Do not install the device near oth-
er electrical equipment as this may
lead to signal disturbance.
– Do not open and/or replace the
battery.
– Do not use solvents to clean the de-
vice.
– Properly dispose of packaging ma-
terial and keep it out of children’s
reach as it may represent a hazard.
Disposal must be performed in line
with applicable laws.
– Do not dispose of the device as do-
mestic waste.
1.3 Device description
Arrow
WAN
MVM is a compact radio module
for
Maddalena series MVM and MVM Plus
C water meters that enables measurement,
transmission and remote reading of the
consumption values and alarms using wire-
less technology.
Arrow
WAN
MVM is available in two versions:
Arrow
WAN
MVM 169 and Arrow
WAN
MVM 868.
The two versions differ for their transmis-
sion frequency (respectively 169 MHz and
868 MHz) and for the protocol used.
Arrow
WAN
MVM 169 uses the wM-Bus trans-
mission protocol and also conforms to AF-
NOR E17Z v2.
Arrow
WAN
MVM 868 uses the LoRa protocol
and is certified by LoRa Alliance®.
This guarantees a high level of interopera-
bility with various reading systems on the
market, including third-party systems.
