Today, that process is changing. San Jose Water (SJW) is replacing traditional meters with Advanced Metering Infrastructure (AMI) , commonly known as smart meters . These aren't just measuring devices; they are "silent sentinels" that communicate. Equipped with an Encoder Receiver Transmitter (ERT) , these meters send individual usage data directly and wirelessly to the utility company.

With the rise of electric vehicles, CSJ smart meters are embedded inside commercial charging posts. They measure delivered kWh for billing, log session data, and communicate with payment gateways via the meter's serial interface.

Why choose CSJ over generic alternatives? The answer lies in the feature set. Here are the critical components that make CSJ smart meters a premium choice.

For decades, the rhythm of utility billing in San Jose followed a predictable pattern. Once a month or every other month, a technician would walk from house to house, lifting heavy metal lids to manually read the dials on water meters. For many homeowners, the only time they thought about their water was when the bill arrived—sometimes with the unpleasant surprise of a massive charge due to a hidden pipe leak that had been running for weeks.

"My meter shows power but reads 0 kWh." Solution: Check CT orientation. A reversed CT will cancel out the reading. Verify that the CT ratio setting in the meter matches the physical CT label (e.g., 1000/5A).