# Meter
Users need to install meters or CTs on the energy storage side and the grid-connected side.
# Device List
Tapping Meter, you'll see all meters under the EMS and the basic information about each meter.

# Device Details
Tap a meter to enter the details page of the meter and view the basic meter information and meter analysis data.

Here is a description of the meter details page:
Serial Number | Name | Description |
---|---|---|
a | Basic device information | Displays the device status, device model, device SN, and device image. |
b | Data refresh setting | You can view the last data refresh time and set the refresh interval for the page. Three options: 1 minute, 3 minutes, and 5 minutes. |
c | Meter analysis | Set power parameters and time dimensions to generate analysis charts, to judge the operation of the system on a certain day.
|
# Device Maintenance
In the meter list, select a single meter and tap Maintain to enter the meter maintenance page.

At the Maintain page, you can:
- view the device status, device model, and device SN.
- check the registration number of the EMS to which the device is connected.
- view the meter type.
- check the online time of the meter.
- detect the meter (only for the grid-connected-side meter, not for the energy-storage-side meter). Tapping to enter it, you can check the meter and CT connection status. It takes about 2 minutes. If there is no problem, it will display Normal.