Users Manual

Functional Description
The Allegro IOT - Interpreter LR9 is a wireless battery endpoint for the application of
automatic water meter reading. The primary function of the module is to record
magnetic field reversals that are converted to measurement of water consumption
volume, and then deliver the data to the utility for processing. The diagram below
demonstrates this operation.
The radio has two operating modes, chirp spread spectrum (CSS) and single channel.
The CSS is the normal operating mode for network communication. The single
channel mode is primarily used for field diagnostic purposes.
When installed, the module automatically utilizes the CSS mode to operate as part of
a LoRaWAN network. The module will remain in this mode unless a service event is
initiated from field tool. In this case the radio changes to the single channel mode for
the duration of service session. The module returns to the CSS mode when the
service session is closed.
The user does not have the ability to change modes other than using the field tool.
Figure 2 – Operation setup illustration