About the 100W/100W+ and 100WP/100WP+ ERT Module
-0909-006 100W/100W+ and 100WP/100WP+ Datalogging Water ERT Module Installation Guide 6
Proprietary and Confidential
Itron Security Manager (ISM)
Users have the option of enabling the ISM enhanced security in the 100W+ and 100WP+ ERT module. ISM
is a component of a ChoiceConnect system. ChoiceConnect system security applies to the RF
communications between the handheld computer, Mobile Collector, or Fixed Network system and the ERT
module. There are two fundamental security processes used in the ChoiceConnect system to ensure
confidentiality and validity of the system communications.
• Authentication. Authentication is the process of confirming that an artifact is genuine or valid.
Authentication in the 100W+ and 100WP+ ERT module is the process of verifying a request is from a
valid source and in its original form.
• Encryption. Encryption is the process of transforming information to make it unreadable to anyone who
does not have a valid security key. There are two types of encryption, 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.
As a component of the Itron ChoiceConnect solution, the 100W+ and 100WP+ ERT module supports the
security model found in the ChoiceConnect solution for both reading and programming. If the 100W+ and
100WP+ ERT modules are shipped without ChoiceConnect security enabled, the utility can, at a later date,
configure the ERT modules for security.
Enabling 100W+ and 100WP+ ERT Module Security
When 100W+ and 100WP+ ERT modules ship from an Itron factory, each module contains a utility factory
key. The presence of this utility factory key does not enable security. The installer enables 100W+ and
100WP+ ERT module security using an Itron programming device and programming commands. Initial key
exchange commands are secured using the utility factory key. For more information about programming the
100W+ and 100WP+ ERT module, see the FDM Endpoint Tools Mobile Application Guide (TDC-0934).
Battery Life
Powered by two non-replaceable, long-life lithium batteries, the 100W/100W+ and 100WP/100WP+ ERT
modules have an expected battery life of 20 years when the ERT modules operate in default mobile or fixed
network operating mode. If the 100W/100W+ and 100WP/100WP+ ERT module is programmed for hard to
read mobile mode, the battery life is reduced to 12 years. To pro-actively indicate the battery has reached a
<10% useful battery life, a Low Battery Flag is set to indicate a low battery warning and alert the utility of an
impending battery failure.
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