Installation Guide

symmetric and asymmetric. Symmetric encryption uses a shared key to decrypt or encrypt
information. Asymmetric encryption uses a private key to encrypt and a public key to
decrypt. Data transmissions over the network are protected using AES-256 encryption.
Battery Life
The 500WERTmodule has an expected battery life of 20 years, dependent on use case.
Low Battery
500W ERT modules include a low battery indicator that helps utilities proactively plan and
manage field module replacements.
Note: Low battery functionality is based on the module's firmware version. For more
information, see Firmware Functionality on page 13.
Transmission Modes
The 500W ERT module is an IPv6 Wisun compliant device that operates in Mobile Mode or
Network Mode.
Mobile Mode
In Mobile Mode, the module transmits every nine seconds over multiple RF channels to report
on:
■
meter register value
■
cut cable or communication error event
■
reverse flow (encoder version selected)
■
system leak status
■
low battery indicator
Network Mode
In OpenWay Riva Network Mode, the module reports four interrogation cycles daily. Each
interrogation collects six hours of 3,840 buckets of interval and event data. Interval data is
configurable from 1 minute to 1 hour (for example, 160 days of hourly data or 40 days of 15
minute data). Interval options are 5, 15, or 30 minutes.
In Gen5 Network Mode, the module supports 5, 15, 30, or 60-minute intervals. It provides
storage and reporting for up to 62 days of 15-minute interval data and associated event data,
or 8 months of hourly interval data.
Note: Interval data configuration is dependent on the module's firmware version. See
Firmware Functionality on page 13 for more information.
500W ERT Module Remote Installation Guide 2 About the 500WERTModule
30 June 2021 815-0005-00 REV 008 Itron, Inc. Page 11 of 45